Comment on killer instinct by MadrePappagallo

It's completely natural for a person to have an instinct for self-preservation. If that means putting a permanent end to someone/something that is trying to kill you, then yes, people have an instinct to kill. Going off and actively hunting/killing other people, however, doesn't fall into that self-preservation instinct... unless you come from a cannabalistic society that sees other humans as legit food.