Are stupid non researched hypothesis allowed? I had in my mind: maybe those roles come from times when life was more violent, so having a strength advantage due to biology was an obvious way to hold power and impose rules that benefit your group/gender. I feel this somehow connects to emotional behaviors that may be required for war and politics, such as not showing your weaknesses. Then you have centuries of cultural development, such as religions, that created layers of justification for the social order that benefited the people in power, even when the physical strength advantage is not relevant anymore, and that’s what we consider tradition.
Is patriarchy and the emotional difference really specific to Western society, if we compare to Arabic, Indian or Chinese traditional cultures, for example?