I was thinking about this (I guess it's only indirectly related) the other day on my way home from work. People in American society are generally opposed to polygamy, yes? I mean, it's used as a comparison to argue against gay marriage (what's next, polygamy?), people are disgusted with mormons because they think we practice it, etc. I suddenly found irony in that, because the same society increasingly accepts extra-marital sex, casual sex, and sex with multiple partners. Seems like the only difference between sleeping around (particularly with those dudes who hav like 7 kids with all different women) and polygamy is that polygamist dads marry the women before making babies, and take care of them afterward. Heh. This is not to say that people should practice polygamy--this is to say that people shouldn't sleep around.
Regarding abortion, and the reason it made me think of this, is that my thought about it all is (except in cases of rape), you knew sex makes babies and you still chose to have sex. The best way to not get pregnant is to not have sex. I think people should just not have sex until they're ready to risk pregnancy. I think sex for pleasure is terrific. I also think that if you make a baby, you should take responsibility for your actions by raising the kid, or giving it up for adoption if you're not prepared to give it a healthy upbringing.