Humans act a lot like apex predators in their environment (e.g. Lions in the Serengeti, Wolves in Yellowstone). It's just that our environment happens to be the

Humans act a lot like apex predators in their environment (e.g. Lions in the Serengeti, Wolves in Yellowstone). It's just that our environment happens to be the entire planet. We dominate the food supply such that only animals that stay out of our way and survive on a food supply that is unappealing to us can survive. In addition, we kill competitors and handle all threats with aggressive tendencies. Finally, when all non-human threats are eliminated, we turn on each other.