Why do people hate? What is the cause of most hate?

People hate because people don't have anything better to do. People hate Because they think they're better than people when they know they're not. People hate because they blame people for all of their problems. People hate because they hate themselves and take it out on others. People hate because they can't appreciate everything they have and get. People that hate should just learn to appreciate. Hating won't get you nothing but more hating.
The cause for most hate is even bigger hate. Once that hate is so big than it will just bring a death. From that death people should have to at least learn hating is wrong but that death will mean nothing. That death will bring a war. That war will continue to bring more hate. Hating will kill all those who want to stand against it, die. So much hating will bring nothing.