I have no problem with a lot of safety warnings and regulations, like it or not, we've laboured for generations to ensure that the next generation was safer than our own. We're seeing the effects of this now.
By the same token I believe someone can be stupid, and still have other redeeming merits, intelligence only being one trait among many.
On the other hand I do tend to agree that we do wind up putting too much value on human life in a general sense, which prevents a lot of things from getting done. Also more so than the issue of weening out the "Weak" from the gene pool, I think we have a massive overpopulation problem, and that's the root of a lot of our problems.
Truthfully though, I tend to see war as a solution to that problem, which is also connected to solving other issues. I'm also of the opinion that there are so many people out there that we shouldn't be thinking in terms of "pro-choice", and "pro-life", but in terms of making someone's right to have children a privlege rather than a right... at least until the population substantially lowers itself. I'm less concerned about idiots doing obviously dumb things than cases like the so called "Octomom" who has a ton of kids, and was taking fertility drugs and dropped a mind boggling litter on top of what was already out there. This to say nothing of the entire "Freak of the week" crowd, with welfare mothers who have like six kids all by differant "deadbeat" fathers. Leading to daytime talk shows bringing them out there to play "paternity test roulette" to figure out who the baby daddy of one of the kids actually is.
I remember many years ago where there was a huge outcry against Eugenics because you had a bunch of doctors secretly sterilizing black patients so they couldn't breed. However right now I'm beginning to think that basic idea has a lot of merits, except it should be aimed at any one ethnicity. As long as a fair sized pool of breeders remained a good old fashioned "Children Of Men" type crisis would do some good.