Becuz its a roll a dice sport anyone can win. No defensive minded fighters. Everyone is looking for that lucky shot. They don't have stamina. Typical white man with dyed hair, mohawk style, tattoos and piercing all over the face. They think they're badass and get dropped by the weakest punchers.
Straight up - boxing is just beautiful to watch, a restricted form of fighting that is generally perfected with different styles- and therefore, beautiful to watch. UFC however, you have a professional wrestler (this is just an example) who joins the UFC, but in the process has to learn general boxing, muy thai and looks silly when he competes in other art forms other then wrestling. So it just looks like sloppy street fighting - this is until you come across two fighters in the same ring who know their stuff and are well rounded fighters.
Comment