I think depending on the circumstances of the situation that someone can be in, abortion can/can't be okay. I believe that in a situation where you "accidentally" get pregnant while having sex without any form of protection and want an abortion then you're an idiot. Because:

1) Use a condom.
2) Use birth control.
3) If you're that worried about getting pregnant, then just sow your vagina shut and step away from the peen.

Now we all know condoms and birth control aren't always 100% effective in preventing pregnancy, but the chances of getting pregnant are certainly lessened then using nothing at all while having sex.

But if a woman is in a situation where she is raped and it turns out that she is pregnant from something like that then I think it would be okay to get an abortion. Think about it. It's traumatizing enough to go through something horrendous like that but to have a child with someone that forced themselves on you would be very damaging. Not only on the woman but on the child itself.

In a religious aspect abortion may be completely taboo, but I think it ultimately comes down to the situation itself.