Can someone tell me why people talk about abortion like it's just a way of discarding a waste?

I see it as the TAKING OF ANOTHER LIFE, in other words, MURDER and nothing else. Please share your views and lets open our eyes better.

You just can't be against abortion as if you know the inner reasons of those doing it!

I am a pro choice person . You see abortion can depend on circumstance sometimes. What about Rape victims? What about someone financially/mentally unfit to be a parent?

^^ C'mon those reasons aren't cogent enough, you may need to consider other options. The orphanage for instance. Pls don't get me wrong here but i feel they have a right to 'live'. The circumstances surrounding why women opt for abortion in the first place is not the poor unborn baby's fault.
More importantly, the giver of life (God almighty) frowns at it.

Orphanages do get underpaid and understaffed.
And the God argument does not go over with everyone, myself included. I believe in God, but I do not want to hear sermons when it comes to proving a point that does not have to do with religious texts: social issues for instance.

I'm pro choice. It is a woman's right what to do with her body. Now, if the fetus is of viable age, where it can live outside the womb (I don't remember the exact weeks/months) then it's something different. And there's also the circumstance to consider, as Ethiodime pointed out.