Reasons behind the Hate, boxing only!

Cast aside your thought on how Mayweather is personality wise, and base him just on his boxing! Why do people still hate him, purly as a boxer? Okay people might not like they way he is outside the ring, the way its money first, fans second or even dont like the way he trash talks before fights to get under his opponents skins, or even the steroids thing with Pac-man. So to people that hate Mayweather i want to know why, just from a boxing point of view!