For nearly 6 milleniums most cultures understood that families function better with one having the leadership role rather than two presiding ones with equal authority.
Most have been traditionally sensible enough to understand that the strong one who was responsible for the safety of the family would be the one suited for the leadership role.
Besides your erroneous calculation of the span of human development, how can you possibly equate male leadership with anything positive?
Within the last 100+ years we have seen life spans go up, infant mortality rates go down, technological development sky rocket...etc.
Why in the world would you think that anyone with half a brain would want to go back to a time when only men of a certain race are in charge? That was tried and tried and it failed with dreary colors. Have you not read any history books?
The traditions that you revere only brought misery upon much of the people of this world...and still does in many cases. Why do you want that to continue?
"You are metaphysicians. You can prove anything by metaphysics; and having done so, every metaphysician can prove every other metaphysician wrong--to his own satisfaction. You are anarchists in the realm of thought. And you are mad cosmos-makers. Each of you dwells in a cosmos of his own making, created out of his own fancies and desires. You do not know the real world in which you live, and your thinking has no place in the real world except in so far as it is phenomena of mental aberration." -
The Iron Heel by Jack London
"Hazards exist that are not marked" - some bar in Chelsea