I really can't see why someone would not like Pacquiao. Exciting fighter, always goes for the KO, gradually improving, humble, gives back to his people, fights every big name that was around him.

Truth be told, I think Xadu/Saddoboxer did a lot to make people hate him by his obessional sacksucking. But the only other reason I can see why people wouldn't like him is if he fought your favorite fighter.