You guys are looking way too deep into this, on both sides of the issue. Fuck ethics, what about freedom? The question should not be whether or not abortion is right or wrong -- that is totally irrelevant. The real issue of whether or not the sociological effects of abortion are so negative that it needs to be banned, and my answer to this is no. We have regulations in place to discourage people from committing things like murder and rape because we can very effectively measure the consequences of those actions on society. The same can't be said about abortion. Regardless of your personal feelings about it, the fact remains that it just isn't hurting anybody on a large enough scale to so adamantly protest it.
Personally, if I ever found myself in a situation where I had a woman carrying my unwanted child, I would do everything I could to talk her out of the idea of getting an abortion. In principle, I dislike the idea, and I hold myself to moral standards that most pro-lifers would find very noble. That is my decision. Not yours, not the governments. Mine. Allowing people to run their own lives even though you may not agree with all of the choices they make, but understanding that unless they are directly reducing your quality of life, you have no right to bitch and whine...that is the true meaning of personal responsibility. You know, that thing you sanctimonious, bedwetting right-wing assholes are always talking about, but without having the faintest idea of what it actually is.