The probable truth is that, since humans are the only species in the planet that haver logic and created technology, they found the first thing that technology gives: power ovet the other who has inferior or no technology.
The first ape-man who found out that a hardened bone, a piece of wood or a rock could serve as a weapon, in order to kill his fellow ape-man and so have more food, or that much coveted female, gave birth to what humans do most in contrast to all other species: WAR!
Humans started quarels and fights against other humans, tribes went to war against other tribes and nation against nation as of today.
War usually is conducted and exersized by males, thus giving them power and primacy against he “inferior” females in their respective societes. Thus patriarchy was established.
It sure is right that a peaceful society could benefit from matriarchy in general, but since humans love power and war gives dominance of the winner over the defeated, patriarchy has evolved.
So it is not exactly an accident. It is written in our DNA. If we achieve to evolve beyond our lust for power, then we may find true peace and then, we may find true equality between men and women instead of fighting each other.
For the moment, as the ancient Greek wise man Democritus said: “War is father of all”.
