Axel, you might be right that in the past, tribes in which women are subservient and fecund  always wiped out less fecund tribes. But, who really wants to live in the Stone Age, the Age of Genghis Khan or Nazi Germany? Since the Enlightenment, we have started to overcome the instinctive and brutal aspects of human nature. We have no choice but to keep on suppressing our demons. In a world full of nukes,  Stone Age instincts no longer promote survival.