his football doesn't have anything to do with it, it seems like to me... because IMO you're showing "hate" on a personal level.
Regarding his football: I don't like him much as a player either, but his playing style is very humble (yeah, I said that). He's very limited, and even though he sometimes tries to do stuff he can't handle, his playing style is based on working really hard. And he did always work very hard at Milan. I don't understand how anyone can take that away from him. And he was always in perfect shape and acted like a team player. His flashy personality fools everyone who doesn't like that type of character into believing that he's like that on the pitch as well.
Did I want him to stay at Milan? Nope not really, because he's not the one to take us to another level, but I sure as he'll would rather want him here than the likes of Muntari, Nocerino, Birsa and Robinho.