That is certainly a controversial opinion. The smile after the first sentence scares me somewhat. I would argue that in a country with modern medicine, any 'legitimate reason' (and I am not sure what that would be) for terminating a life should be able to be identified at a much earlier stage. Therefore, I would suggest mandatory screening for life inhibiting conditions at X weeks into pregnancy would be a more suitable alternative. Following the same line of thought, what about those who suffer life inhibiting conditions at a later stage of life (degenerative diseases/brain damage etc)? Should others be able to take their life from them?
Haha sorry about the smile :P I'm not "that guy", but I just had to put it there because it's so controversial. About your next thought: I'm not really sure, I think that people who are unable to respond to anything in any way might aswell die. A friend of mine just got a kid which looks like quasimodo and has a serious braindamage, why would "we" keep that alive? It's not really beneficial for any part. I also have a relative who is mentally and physically retarded after a diving-accident, he just sits in a chair blinking his eyes. If that was me I'd rather be killed, and I feel that it might have been better if he died in that accident.