The only men who don't cry are sociopaths, macho **itheads, or otherwise mentally compromised men. Healthy people cry when their dog dies, they win the lotto, their Mom gets cancer or they break their knee.
We cry when we see someone use English writing like you do. It should be "Why do men never cry?". "Does" is used with a single person, like "Does he cry?" And yes, you haven't been around many men have you. Go to a funeral sometime.