Yeah, I am not sure where the hate comes from. I like to pick at him some, but Hate is too strong a word. When someone says, "I hate ..." it implies a personal context. I don't know the guy, I can say I dislike his ideas, execution, writing, directing, and smug attitude, but I can't say I "hate" the guy. He's probably a pretty good guy, for all I know.
I just happen to believe that he is extrememly fortunate (about 4.05 billion dollars worth) that he surrounded himself with more competent writers, directors and other movie making people, otherwise, Star Wars would NEVER have been as big a hit as it was...