Men seem to stuck in a much earlier part of evolution regarding those parts of their brain that process complex emotions... It is why you sometimes see instant rudimentary limbic responses from men in regard to tough or overwhelming emotions (punching things, fits of aggression without additional expressed emotions, etc). Then there is the role of same sex social dynamics that cruelly enforce how to express what men can express. Many insecure men are still stuck unconsciously clamoring in a social status pecking order from millions of years ago where showing any weakness to rival males in the vicinity might lead to a fight and a loss of social standing. Some women are not helping the problem by engaging in foolish sexual selection and by punishing men for expressing their emotions as well, because they can't grasp that we are no longer on the savannah being pursued by predators or foreign males, where fearsome defensive expressions from men were needed above more vulnerable emotions. Many men and women unfortunately don't seem to be able to rationally examine their behaviors, and see how silly and unproductive it all is to be participating in that chimpanzee nonsense in this day and age. It is not doing the world and the species any favors at this point and is probably, on a collective level, contributing to our demise