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"but unprotected straight sex is producing children who must...be raised by emotionally unequipped 17 year old parents."
First off, that's a cheap shot at a 17-year-old, and you don't know whether she & her boyfriend are emotionally equipped or not--and have absolutely no right to.
Obama's mom was only 18 herself and was much like Palin's daughter during much tougher times to be a young mother (especially of a biracial child).
"Sarah Palin is a right-wing, pro-life hero because she didn't abort her Down syndrome baby. Funny, if abortion really is murder, I would think that the simple act of refraining from murder would just make someone normal, not a saint."
But that exactly is the whole point of the right. They feel that life has been devalued and that society pushes people to abort less than "perfect" children. A disturbing aspect of the pro-choice movement is that kids with Down's and some other disabilities are being systematically erased from our society through abortion.
In China and India, women are aborting girls because it makes more economic and social sense to have boys. We in the West are understandably horrified by this and demand that those two societies upend 5000 years of history along with the underlying social structure and economics to make the world more accommodating for girls. In the meantime, we as a society here are aborting disabled kids at unprecedented levels because these kids would likely posed tremendous hardships on parents and relatively few people think anything of it.
But beyond the case of disabled kids, soon we may acquire the technology and understanding to predict other traits (sexuality, behavioral traits, and who knows what else).
One of the concerns of the pro-life movement is that we could be on the brink of eradicating whole classes of "undesirable" or "troublesome" people from our society: kids with Down's, congenitally blind or deaf kids, kids that might turn out to be gay, and on and on.
I'm honestly creeped out by that, how about you?