I've always wondered... Why are humans the only creatures on this Earth that will deliberately try to hurt each other, with no reason other than spite? It'd be different if we hurt each other over territorial issues, like animals, or to survive. But we hurt just to make others miserable. Why? We're supposed to be superior to all creatures, for crying out loud! Why make someone else hurt without a good reason, or for no reason at all? If anyone here knows, please tell me. I'm very curious.