See i dont agree when people say "poor Michael" or he is a tragic figure. Yes he strated out a good guy but he had choices. I mean i get he wanted to help his dad at first but if he really didnt want to be involved with the mob then he could have relinquished control or the corleones could have left the mob and lived a normal life. Also in Part 2 Mike really had become a cold psychopath. I mean Fredo wasnt a saint but most people knew that he never would try to harm his own family because he is not cold blooded