I actually think about this pretty often. Our civilized society is weakening our gene pool. Human beings are no longer subject to natural selection, and any person capable of surviving through puberty can reproduce. It doesn't really matter at the moment, since civilization makes our lives nice and easy, but I think our species will be more refined with the next great disaster (World War 3?). Maybe we won't have to brush our teeth after all that.
well, despite this being an absolutely horrible post and you obviously having no clue how ns/evolution works
humans haven't been subject to natural selection since the very beginnings of civilization. we're social, we change through
social selection. we're selected for and against by an entirely different set of rules. and unlike natural selection,
mating isn't random. humans get to choose their mate, and to help with this we've even got this awesome little inborn indicator we call love. I can understand the fantasy though; people who are nutjobs, unintelligent, unattractive, etc are socially selected against in society. after WWIII, who will be left to socially compete with? just imagine if you were the only male left on the planet! sheeww