Chiming in late but just wanted to add my two cents.
As mentioned by several others before, I am pro-choice but also pro-sex education and pro-birth control.
There's a certain misconception about those who seek an abortion, and I held some of what the stereotypical notions until I actually interned at Planned Parenthood while in college (women's studies minor). I was STUNNED that the majority of those that came in where married women who already had children and were from deeply religious backgrounds/family planning wasn't something that could be discussed with the spouse, yet they sometimes came with their mothers. Which is not to say we didn't get the occasional irresponsible teenager who was on their 3rd/4th abortion. As pro-choice as I am, I find it appalling when people choose that as their method of birth control because it just creates fodder for those who seek to make abortion illegal. But like any system, it will/can be abused but it doesn't mean it shouldn't exist. I'm glad I didn't grow up pre Roe v Wade but my mother, who is also pro-choice, has told me several horrifying stories of the lenghts women/girls went to in order to obtain abortions.
Blame it on women's studies background, but it really chafes my ass that people pass laws governing women's bodies, and still somewhat hold on to the notion that women shouldn't/don't have sex for pleasure, and pregnancy is the appropriate punishment for "sluts," I'm sure viagra doesn't exist because an old guy out there want to go forth and procreate some more. I understand the need to regulate abortions to a certain extent (re: late term abortion) but to make it illegal will not solve anything, and will make things only worse.
Re: selfishness mentioned. To each their own, pregnancy shouldn't be a punishment, but something a woman willingly chooses, I don't see the point in forcing motherhood on a person especially since we know the horrors that come out of that, Caylee Anthony anyone? That might be an extreme examples but it's still a fact.