I'm wondering if it has to do with the their physical superiority in stonage era when the cave men would go out and hunt while the women would stay in the cave and rear the children and so it began that men dominate. However, nowadays, men don't really dominate, instead they cooperate with women to make life better. Though a man will dominate if u allow him to.

I'm not always right, but I'm never wrong :P - Garfield