When he left Cleveland for Miami, I really, really disliked him. The whole "decision" thing was "look at me" lameness. The take-the-camera when he was dunked on in some clinic was embarrassing. The throwing the talc in the air was stupid.
But since then I've come to the conclusion that the dude has been famous since 8th grade, and, all things considered, he has done a pretty decent job of handling his fame. He seems like a genuinely good person.
Most importantly, I think that he'd be about the same person if he never played basketball again, because I think he views basketball as an unessential part of his life, which is quite the opposite of many sports stars, who live and die by their sport.
Of course, even when I disliked him, I always had massive respect for his game. Best all-around player I've ever seen.