I wouldnt say i am a fan, but my son is doing well as an amateur, won his first fight, champion of xyz and got a belt.
He is shortish but aggressive, so the weight levels of boxing suit him.
I think it has given him a lot of self confidence and his gf seems to enjoy watching him fight
I went to a south London promotion with lots of different fights, it was a cool night. Very friendly and full of respect.