Actually Chucky, it could be argued that culling IS human nature, just not in the traditional (killing) sense of the word. Most importantly, it's about simply removing an individual's
ability to propagate negative genetic traits. I can see the case for it myself, but I do have a problem with deciding what constitutes a negative trait. Obviously, many of them are no-brainers but the nature of evolution is such that what's a liability today may be an asset tomorrow when environmental conditions change. I think I made this point well enough in an earlier post so I 'll move on.
By removing criminals from society and putting them in prison we are effectively culling them from mainstream society. With generally laughable efforts at rehabilitation, it's no surprise that so many ex-cons have a hard time reintegrating (of those who actually try to).
It's also been the case with mental illnesses and diseases like tb, influenza, and leprosy.
In terms of 'controversy'...even Canada, a bastion of fraternity and liberty, had eugenic sterilization laws on the books until the early 70s. The US led the pack by sterilizing not only the mentally deficient but criminals as well. Japan, Sweden, India, China, the USSR, Czechoslovakia, Switzerland and of course Germany had compulsory sterilization programs at some point within their recent histories. Bear in mind also that all of these countries instituted their programs PRIOR to the rise of Josef Mengele and the Nazis.
So yeah, I would have to argue that culling is indeed human nature. Is it one of those darker parts of us to be suppressed ? Or should we accept it as one of the negative traits that may become an advantage when environmental conditions change...
The development of the brain has, in general, been a bad idea.
I certainly understand what you're saying there but I don't think that's the case. Not literally anyway: I think the problem stems from the fact that our ethical development is still at a paleolithic level. We have this great product of the evolutionary machine rolling around inside our skulls, yet we still kill each other over stupid $#%^. We are just monkeys - we want our own bananas and yours too so if we can't have 'em we'll just take 'em, regardless of how it'll affect you.
We have a million ways to kill each other but we can't cure a cold.
EDIT: Ok, I actually edited this out because I wanted to shorten the post but, yeah I've been trying to figure this one out too...
...the huge increase in allergies...
I JUST saw this story which makes one of my points exactly so I'll paraphrase.
http://news.bbc.co.uk/2/hi/health/7758183.stm
Another side of that is that all of the fear messages we see in the traditional media now have another avenue of delivery with the ability to target it, surreptitiously or not.
The next is about how our diet has changed because of our manipulation of our food supply and what that's done to our resistance to things like allergens and previously-benign microorganisms (necrotizing fasciitis...wtf?).