Maybe young men need danger and adventure to be truly happy. It worked for me. What attracted all of those young men to ISIS? Of course most of them have since been blown up, but swanning around the desert in a Toyota Hilux with a heavy machine gun on the back taking whatever they wanted probably produced some happiness. I bet that the young Taliban fighters are pretty happy right now. In order to make life safe enough for women we may have messed things up for the young fellows.