First reason I'm not going to argue with as it's a widely held opinion and I tend to agree with you, with the caveat that I tend to dislike many boxers on what they say/how they act. Haye for example, comes across as a tremendous asshat.
I'm not sure I follow your second point, to dislike a...
You'd think so wouldn't you? Worth remembering that he has got form when it comes to saying he'll retire...pretty sure he's had three or four 'last shots' at this point.