I think a huge difference that men from women is the drive that men have. Here's a simple evolutionary reason for why men have drive: sexual competition. Do women go to college and get careers so that they can attract men? No, they're doing it for their own personal reasons. Men seek fame and fortune for women ALL THE TIME. Men will do wild things to get women. Also, this drive is not necessarily conscious, but men who use that drive to achieve something are not necessarily looking for sex. Think of it as a form of mental masturbation. Men have a larger "organ" in their brain that they have to keep satisfied in order to be happy. This organ I believe is a relic of evolution.