I'll also add to this: Men who fail to have children are called into question. If you're married, older, and have no children then one of you is assumed to be impotent. If the woman is prettier, then its likely the man will be considered impotent. Even if the man is charismatic, a lack of children combined with a lack of sexual show (e.g. philandering) will be seen a sign of low testosterone and emasculation.