The patriarchy is a child-centered society. It is interested in birth and survival rates of children, and that is why males were drafted. Male disposability led to more children.  The patriarchy comes from difficult times, it was born in hard times, it is a very social system, an efficient system, and it’s a survival mechanism.
We know it leads to successful societies because many of the major cultures that dominate the world today have a patriarchal history. And we can see this most clearly through the fact that the world’s major religions like Christianity, Islam, Hinduism and Confucianism all come from cultures which support the patriarchy. All of these religions and the cultures that support them speak of female obedience to her husband and male responsibility and dominance over to his family.
Most of the world’s major cultures have patriarchal roots, this is a map showing the major religions of each country as it was in 1960. It is taken from Hans Rosling’s talk on religion and babies.

Since people who share the same religion also often share common cultural practices with respect to structuring family life, and the cultures associated with the major religions in the picture above are all patriarchal, we can see that the patriarchal way of structuring society has had a lot of success.
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What happens in such a society is that men do not take care of or even know their kids. Women work and take all the steady, easy and good jobs. Men, who only need to take care of themselves, take the unstable and unreliable jobs, the hard jobs.