I always thought that there was proof of the existence of matriarchal society in the ancient times but apparently, according to Wikipedia this hypothesis is mostly discredited today. Why?
Wiki cites:
The view of matriarchy as constituting a stage of cultural development now is generally discredited. Furthermore, the consensus among modern anthropologists and sociologists is that a strictly matriarchal society never existed." 'Matriarchy', Encyclopædia Britannica, 2007