Earlier quoted context omitted.
Violence is a part of nature, and humans are evolved to participate in it like all animals. It only becomes evil in the context of human values, where I agree there is no reason for people to be killing each other. However the ability and taste for killing is a genetic trait that has been valuable for some individuals over time, so don't fool yourself that some people aren't genetically primed to be killers.
Humans can choose to be non-violent. This is what makes us human. The moment you remove that choice - either personally or socially - you become an animal, again. Genetic traits? Well, we've overcome them before, with our free will - we'll do it again. We had lots of genetic traits that predetermined our inability to live on the Moon - but we soon decided that wasn't going to get in our way. Why can't we do the same…
Way to take an even-handed comment like mine stating facts with minimal value judgements and attempt to turn it into fuel for your idealogical steamroller. The only problem is you didn't really read and comprehend what I said.