I personally do not agree with abortion, because if you are having sex, you should be prepared to end up giving birth (heterosexual sex, that is). I don't agree with the legalization of abortion. But I disagree with the illegalization of abortion even more. There will always be the people who have been raped, who should always have access to abortions. There are the people who know that they just can't raise a child, and aborting will end up with less suffering. Similarly, imagine being the result of a one night stand. That would be horrible. The thing is, there will always be the people who want an abortion, and if they can't get one legally and properly, they are going to resort to, ah, more shady methods (such as jumping off the top of the stairs, hiring untrained gangsters to knife open the womb and remove the baby, and similar things).
My point is not that abortion is amazing. It is a last resort and should not be treated as some kind of joke. It is often traumatic, but legalizing abortions will ultimately end up with fewer deaths. Abortion is terrible, and no-one should have to go anything like it. But just remember: the alternative is much, MUCH worse.