Gotti was an awful boss but he did believe in the mafia and what it used to stand for. If it were not for the fact that he was a violent guy, he never would have got anywhere in the mob. He was a degenerate gambler and he was never a great earner. His brother Gene was the real money maker in the Gotti family. Even Angelo Ruggiero made more money than Gotti ever brought in by himself. If he did not have his crew to leech off of he would be no different than any other degenerate gambler who hangs out at the track. In many ways Gotti could be the luckiest mob guy ever, except for the life in prison thing lol. Just my two cents.

I honestly believe he never actually killed anyone himself, although he clearly ordered many hits.