I am not a fan of Roddick's, but hate seems like such a harsh word to attribute to him or anyone else for that matter. He's still really young in terms of chronological age, even though he's been on tour for quite awhile now. His attitude sometimes leaves a lot to be desired sometimes.
He sinks himself with infamous quotes like the one he dropped against Youzhny at this year's US Open..."Too big."
Things like that are offensive to the ears of many, and Roddick is liable to do that.
He has been treated like a star in the States since the jump, and I think that's affected his demeanor, and not for the best. Some people are better equipped/able to handle that initial burst of fame at an early age; Roddick, IMO, has not.
I still stay he has potential, though.