In most Disney movies, regardless of the strength of the female character, she is always eventually rescued by the big, strong, handsome man. She is allowed to win the smaller battles, but he comes in at the crucial moment. Boys, on the other hand, learn from G.I. Joe. Male role models, i.e., cartoon heroes and action figures, have bulging muscles and are built for fighting. G.I. Joe had his guns and helicopters.
Women often shop for recreation, and men collect cars, stereo equipment, and boats.
Finally, boys learn that they have to be the strong ones, no matter what. The heroes never cry, and they are always the ones to save everyone. And they get the girl in the end. Then, of course, there is the issue of violence. All male action figures are made for fighting and war.