My dad's cousin adopted two kids that were half-brothers. Both of them came into being because the mother thought the child would keep her boyfriend with her. I might also inform you of a few disabled people who might have been aborted by that line of thinking, people such as Stephen Hawking, the greatest physicist of our time. If I was disabled from birth, I'd personally be insulted by this. Who are you to decide that my life isn't worth living? I have a friend who has never walked in his life. He doesn't know what it's like, so it's nothing to miss, and he's perfectly happy. Not only that, but the last time I saw him, he was off to college with a full scholarship and stipend. I had another friend who was blind and played piano in Carnegie Hall. Was his life worth living, or should he have been aborted to make sure he wasn't in 'constant pain' his whole life? Some mentally retarded children go on to change lives and accomplish great things, even if they're not intellectual. Is theirs a miserable existance that nobody should live? You see, people born with a disability may feel different, and that can cause problems, but they aren't as miserable as you seem to think. Most of them go on to lead perfectly normal lives, and it's not your perrogative, or anybody else's, for that matter, to decide whether or not that life is worth living. If you're into mercy killings, go kill people who just became disabled, because those people actually are miserable, or would that be wrong?