Rooting essentially means profiting root-level get access to to your apparatus. Those who have used Linux OS will effortlessly understand, but for users like me who have been trusted to Microsoft’s operating scheme all their inhabits, this means that by rooting your apparatus you get complete control over what should stay in the apparatus and what not. Rooting means you are the expert and in command, not to mention the fun of it.

Android, regardless of being open source, still did not give a user entire command over the device. This prepared cornerstone for numerous promise abilities residual dormant, and subsequently Android devices began to get ‘rooted’. Now this begets the question, why root? With so numerous Android-based handsets out there now, this question has become even more significant.

Back from the vintage Windows Mobile ROM preparing food days, persons have been interrogating limitations of every device and finding workarounds. When iPhone was commenced back in 2007, the power user edge of the users quickly realized the factual potential the apparatus held, and the fiendish software limitations that Apple had sealed it with. What became ‘Jailbreaking’ on iPhone was quickly translated to other stages as well, and when the world glimpsed the first Android back in 2008, the identical notion got acclimatized there too.

This are reasons worthy of rooting your file

Performance Update
There are just too many flavors of Android in the market, with every OEM or carrier adding their own personalization and customization to devices. While they may appeal to some, they do not let the device take full advantage of what the hardware is capable of. With root access, you can actually tweak the OS to behave entirely differently, and with infamous developers like Cyanogen working on custom ROMs and mods, people have actually reported performance boosts. Take the G1 for example. The device never got 2.1 officially, but thanks to Cyanogonmod G1 owners can not only the tastiness of Eclair but also report much better performance than the stock ROMs.
Hardware/Software Interaction
Most Android devices come with hardware that is fairly heavily capable, yet the OS limits them and becomes the bottleneck. By rooting, you actually remove the bottleneck and hence can take full advantage of your beloved Android. For example, overclocking a device’s CPU is fairly simple and rather safe thanks to many third-party apps, yet the OS does not allow it natively, and hence overclocking can only be done with a rooted phone. Or suppose you want to use your mobile’s LED as flashlight (HTC Desire, anyone?) but cannot because HTC won’t allow it? Rooting will allow you to bypass this limitation!

APPS2Sd
One of the most talked-about feature (or disadvantage) of any Android device is the limitation where you can install applications only in the phone’s internal memory and not the SD card. While Google may reason that SD cards are slower in general and cannot run apps as effectively as internal memory, fact of the matter is that most Android devices do not come with massive internal storage spaces, and hence greatly limit the number of applications that can be installed at a time. With rooted devices, you can use Apps2SD, which will copy ALL your applications to a ext2/3/4 formatted SD card an will also store future builds in card. Freedom to choose!
Unavailable Features
When Google brought forth the Nexus One, one of the aesthetically pleasing features was Live Wallpapers. Unfortunately, most of the Android phones vary so greatly, that despite the hardware being compatible with Live Wallpapers, the software won’t allow them to run. My Samsung Galaxy Spica is a perfect example. The handset’s hardware can easily handle Live Wallpapers, yet Samsung chose to exclude it. Thanks to rooting, you can have them on your device as long as hardware allows.

EXTRA APPLICATIONS
Folks at XDA-Developers have created a wonderful application, SetCPU, which allows easy overclocking of various Android CPUs. However, due to the permissions required for such level of operation, a superuser access is necessary, and that can come only from a root access. This is just one example. The internet is flooded with many such applications that remain useless unless you have rooted your phone.
Multitouch
If you have ever typed on an iPhone, you would always remember the smooth, fast typing action that you achieve on that amazing keyboard. Or if you can recall that pinch-zoom actions. These are the products of a multitouch screen.
While most Androids can deal with multitouch, various manufacturers have decided to omit it in their devices. This is not always because the hardware is incapable, but because the software does not let it happen. This becomes even more irritating when you see that HTC Hero had multitouch input support back from the Android 1.6 days, but more modern more powerful 2.1 devices never got it (again, my Spica).
Thanks to rooting, it has become possible to get multitouch input in various devices, most notably the G1.
WIFI AND Bluetooth Tethering
After having rooted your device, you can also use WiFi or Bluetooth tether to share your cellular data connection with your laptop or PC. The application works with ad hoc connections and will get you up and running online on your laptop in no time. Similarly, tethering can also be achieved over a Bluetooth connection. You may check out the app in question here, but remember, rooted-phones only.

Please do remember that rooting voids your warranty.

SOURCE: http://www.nairatech.net/2013/03/why-you-need-to-root-your-android-device.html