It's hard to think of a better world with nothing bad in it. Without hate, what would we do to learn about the thoughts that we have? We think that a world without hurt would be good, there is no hate, so why should we be scared to go outside... why should be we be scared to live a nice life. Everybody needs that feeling of hate, and be in a world with hate. Without it, we would never learn about what it's like to be down mentally.