After writing on camping-while-female, I wondered where to find statistics on the relative dangers of men who dared to venture outside the home. It looks like folks in Australia have collected some data on the matter. (The linked article includes links to source material as well.)
In short, the article points out that men who engage in risky behavior–leaving the home, attending an entertainment venue, things like that–are many times more likely to become victims of violent crime than women who engage in the same behavior. Men are, by statistical fact, much safer at home.
If we follow the same logic that has been applied to women, we should immediately begin cloistering our men and boys for their own protection.