What's the problem with the legality of abortion?

what's the big problem about keeping abortion legal or not? I know people say it kills the fetus? so what? it's not a big deal. what's wrong with just minding your own business and let the woman (whom you do not know) make whatever decision she wants to make. let her suffer the consequences (whether it be the physiological pain, physical pain or her ending up in hell or whatever). I'm not FOR it, but I'm just saying why people can't mind their own business. why can't people quit erting their own beliefs into the faces of people who don' want it (especially religious morals)? not everyone is a christian, so not everyone has to follow certain christian morals. if you don't want an abortion, fine. but don't meddle in people's personal lives whom 1. you don't even know, and 2. you're not welcome.