As I see it, Michael tried all his life tryin to protect his closest family members and when his favorite child MARY was gunned down in front of him that is when he died himself internally. He gave up and went back to Sicily to die an old man and all alone. BUT how do we know the fate of Connie or Vincent. That could've been a part IV where VIncent took over the reins or maybe not. By the way, did anyone ever notice where was Connie's children? Im still tryin to find out the name of the song that played right when MARY was shot and Michael was screaming outloud in shock. Im tryin to download a soundtrack and cant find that one song.