Despite Mike Tyson being the heavyweight champion of the world in the late 80s, he was jealous of his brother who was a brain surgeon. He just wanted to be recognized, that most likely fuelled his drive to impress Cus D'Amato. http://www.thesun.co.uk/sol/homepage/sport/123678/My-brother-mends-brains.html
True, the documentaries, broadway shows etc have all been ways for Mike to cash in on his interesting story. I think what he wants people to know is that he has made mistakes, understands them, and is working on being a good citizen.
