The Holy Bible (and Holy Quoran) have us believe that God created Man in His own image and put us here on Earth. The Bible also tells us God created Satan, who rebelled and was driven out of Heaven to Earth.
We also know that Satan has his kingdom on Earth while God has His Kingdom in Heaven and Human Beings are caught in the middle.
We know too that there is unfinished business between the two Entities(God and Satan), and they are busy conscripting human beings into their respective kingdoms.

My question is are we really here because God wants an audience for His ultimate showdown with Satan at the final battle?
or we are here so we can serve as conscripts for the two armies?

Note that when you really think about it, there was no pressing need for God to create Human Beings. He was perfectly ok where He was in Heaven.

What the Bible Says
14 The Bible, mankind’s oldest book, draws the same conclusion. For example, in the Bible book of Hebrews, written by the apostle Paul, we are told: “Of course, every house is constructed by someone, but he that constructed all things is God.” (Hebrews 3:4) The last book of the Bible, written by the apostle John, also says: “You are worthy, Jehovah, even our God, to receive the glory and the honor and the power, because you created all things, and because of your will they existed and were created.”—Revelation 4:11.
15 The Bible shows that while God cannot be seen, the kind of God he is can be perceived by what he has made. It states: “[The Creator’s] invisible attributes, that is to say his everlasting power and deity, have been visible, ever since the world began, to the eye of reason, in the things he has made.”—Romans 1:20, The New English Bible.
16 So the Bible takes us from cause to effect. The effect—the awesome things made—is evidence of the intelligent, powerful Cause: God. Also, we can be grateful that he is invisible, since as the Creator of all the universe, he no doubt has power so enormous that humans of flesh and blood cannot expect to see him and survive. And that is just what the Bible says: “No man may see [God] and yet live.”—Exodus 33:20.
17 The concept of a Great Designer, a Supreme Being—God—should be very important to us. If we were made by a Creator, then surely he must have had a reason, a purpose, in creating us. If we were created to have a purpose in life, then there is reason to hope that things will be better for us in the future. Otherwise, we just live and die without hope. So it is very important that we find out God’s purpose for us. Then we can choose whether we want to live in harmony with it or not.
18 Also, the Bible states that the Creator is a loving God who cares very much about us. The apostle Peter stated: “He cares for you.” (1 Peter 5:7; see also John 3:16 and 1 John 4:8, 16.) One way we can see how much God cares is by considering the wonderful way he has made us, mentally and physically.
“Wonderfully Made”
19 In the Bible the psalmist David acknowledged: “In a fear-inspiring way I am wonderfully made.” (Psalm 139:14) Surely that is the truth, for the human brain and body were marvelously designed by the Supreme Designer.
20 For instance, your brain is far more complex than any computer. The New Encyclopædia Britannica notes: “Transmission of information within the nervous system is more complex than the largest telephone exchanges; problem solving by a human brain exceeds by far the capacity of the most powerful computers.”
21 Hundreds of millions of facts and mental images are stored in your brain, but it is not merely a storehouse of facts. With it you can learn how to whistle, bake bread, speak foreign languages, use a computer, or fly an airplane. You can imagine what a vacation would be like or how delicious a fruit will taste. You can analyze and make things. You can also plan, appreciate, love, and relate your thoughts to the past, the present, and the future. Since we humans cannot design such a thing as the awesome human brain, then the One who designed it obviously has wisdom and ability far greater than that of any human.
22 Regarding the brain, scientists admit: “How these functions are carried out by this magnificently patterned, orderly and fantastically complex piece of machinery is quite obscure. . . . Human beings may never solve all the separate individual puzzles the brain presents.” (Scientific American) And physics professor Raymo says: “If truth be told, we still don’t know much about how the human brain stores information, or how it is able to call up memories at will. . . . There are as many as a hundred billion nerve cells in the human brain. Each cell is in communication, through a treelike array of synapses, with thousands of other cells. The possibilities of interconnection are staggeringly intricate.”
23 Your eyes are more precise and adaptable than any camera; in fact, they are fully automatic, self-focusing, color motion-picture cameras. Your ears can detect a variety of sounds and give you a sense of direction and balance. Your heart is a pump with capabilities that the best engineers have not been able to duplicate. Also magnificent are other body parts: your nose, tongue, and hands, as well as your circulatory and digestive systems, to name a few.
24 Thus, an engineer who was hired to design and build a large computer reasoned: “If my computer required a designer, how much more so did that complex physio-chemical-biological machine which is my human body—which in turn is but an extremely minute part of the well-nigh infinite cosmos?”
25 Just as people have a purpose in mind when they make airplanes, computers, bicycles, and other devices, so the Designer of the brain and body of humans must have had a purpose in designing us. And this Designer has to have wisdom superior to that of humans, since none of us can duplicate his designs. It is logical, then, that he is the One who can tell us why he designed us, why he put us on earth, and where we are going.
26 When we learn those things, then the wonderful brain and body God gave us can be used toward fulfilling our purpose in life. But where can we learn about his purposes? Where does he give us that information?

[b]Life Has a Grand Purpose[/b]1 The way the earth and its living things were made shows that their Creator is a God of love who really cares. And his Word, the Bible, shows that he cares; it gives us the ultimate answers regarding the questions: Why are we here on earth? and, Where are we going?
2 We need to search the Bible for those answers. God’s Word says: “If you search for him, he will let himself be found by you, but if you leave him he will leave you.” (2 Chronicles 15:2) So then, what does a search of God’s Word reveal about his purpose for us?
Why God Created Humans
3 The Bible shows that God prepared the earth especially with humans in mind. Isaiah 45:18 says regarding the earth that God “did not create it simply for nothing [but] formed it even to be inhabited.” And he provided the earth with everything that people would need, not just to exist, but to enjoy life to the full.—Genesis, chapters 1 and 2.
4 In his Word, God tells of creating the first humans, Adam and Eve, and reveals what he had in mind for the human family. He said: “Let us make man in our image, according to our likeness, and let them have in subjection the fish of the sea and the flying creatures of the heavens and the domestic animals and all the earth and every moving animal that is moving upon the earth.” (Genesis 1:26) Humans were to have oversight of “all the earth” and its animal creation.
5 God made a large, parklike garden in an area called Eden, located in the Middle East. Then he “proceeded to take the man and settle him in the garden of Eden to cultivate it and to take care of it.” It was a paradise that contained all that the first humans would need to eat. And it included “every tree desirable to one’s sight and good for food,” as well as other vegetation and the many interesting kinds of animal life.—Genesis 2:7-9, 15.
6 The bodies of the first humans were created perfect, so they would not get sick, grow old, or die. They were also endowed with other qualities, such as that of free choice. The way they were made is explained at Genesis 1:27: “God proceeded to create the man in his image, in God’s image he created him; male and female he created them.” Since we are created in God’s image, we were given not only physical and mental attributes but also moral and spiritual aspects, and these must be satisfied if we are to be truly happy. God would provide the means for filling those needs as well as the need for food, water, and air. As Jesus Christ said, “man must live, not on bread alone, but on every utterance coming forth through Jehovah’s mouth.”—Matthew 4:4.
7 Moreover, God gave a wonderful mandate to the first pair while they were in Eden: “Be fruitful and become many and fill the earth.” (Genesis 1:28) So they would be able to reproduce and bring forth perfect children. And as the human population increased, they would have the delightful work of expanding the boundaries of the original parklike, paradise area of Eden. Ultimately, the entire earth would be developed into a paradise, inhabited by perfect, happy people who could live forever. The Bible informs us that after setting all of this in motion, “God saw everything he had made and, look! it was very good.”—Genesis 1:31; see also Psalm 118:17.
8 It is evident that humans were to use the subdued earth for their benefit. But this was to be done in a responsible way. Humans were to be respectful stewards of the earth, not the despoilers of it. The destruction of the earth that we witness today is against God’s will, and those who share in it are going contrary to the purpose of life on earth. They will have to pay the penalty for that, for the Bible says that God will “bring to ruin those ruining the earth.”—Revelation 11:18.
Still God’s Purpose
9 Thus, from the beginning it was God’s purpose for a perfect human family to dwell on earth forever in a paradise. And it is still his purpose! Without fail, that purpose will be fulfilled. The Bible states: “Jehovah of armies has sworn, saying: ‘Surely just as I have figured, so it must occur; and just as I have counseled, that is what will come true.’” “I have even spoken it; I shall also bring it in. I have formed it, I shall also do it.”—Isaiah 14:24; 46:11.
10 Jesus Christ spoke about God’s purpose to restore a paradise on earth when he told a certain man who wanted hope for the future: “You will be with me in Paradise.” (Luke 23:43) The apostle Peter too spoke of the coming new world when he foretold: “There are new heavens [a new governmental arrangement ruling from heaven] and a new earth [a new earthly society] that we are awaiting according to [God’s] promise, and in these righteousness is to dwell.”—2 Peter 3:13.
11 The psalmist David also wrote about the incoming new world and how long it would endure. He foretold: “The righteous themselves will possess the earth, and they will reside forever upon it.” (Psalm 37:29) That is why Jesus promised: “Happy are the mild-tempered ones, since they will inherit the earth.”—Matthew 5:5.
12 What a grand prospect that is, living forever on a paradise earth free from all wickedness, crime, sickness, sorrow, and pain! In the final book of the Bible, God’s prophetic Word summarizes this grand purpose by declaring: “[God] will wipe out every tear from their eyes, and death will be no more, neither will mourning nor outcry nor pain be anymore. The former things have passed away.” It adds: “And the One seated on the throne said: ‘Look! I am making all things new.’ Also, he says: ‘Write, because these words are faithful and true.’”—Revelation 21:4, 5.
13 Yes, God has a grand purpose in mind. It will be a new world of righteousness, an eternal paradise, foretold by the One who can and will do what he promises, for his “words are faithful and true.”