I kind of agree with at least part of what Calleha said. I mean, my girlfriend works in the mentally handicapped industry. It's very nice and great what we're doing and how much we're doing for them (over here - state-organized health care), but sometimes I have to wonder if it's really worth it having 3 adults working in a class of 8 mentally handicapped who will never get above the mental level of a 3 year old. It's great that we're doing it for those that are there, but preventing them from being so numerous might be doing a kindness - and the money can be better spent elsewhere.
I sort of agree with this, with the understanding that we're talking about (mandatory and more extensive) screening of foetuses for major genetic defects, with follow-up termination of pregnancies if something is discovered. I'm tending towards those terminations being voluntary, though I'm unsure as to how much it would change the current situation. Would make the parents more informed and better prepared to handle their child's condition, I guess. To be frank, I'm not sure a cost-benefit analysis is completely in favor of eugenics.
With regards to some opinions put forward in this thread, I must say I'm against 'culling the herd' in situations where we are dealing with live people. Currently, every person obtains certain protections when they are born, protection of life being one of them, and I'm not sure it is such a good idea to start monkeying around with those too much. That road might lead to some dark places.