I was watching https://www.youtube.com/watch?v=l6K5s86xie4 which talks about "The "Mother Wound" and Your Perpetual Unhappiness. Overcome Your Childhood Trauma".

It made me realize that mothers being unhappy and neglecting their children over hypergamy issues create newer generations of boys in need of affection and falling prey of female narcs when they grow.

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So not only hypergamy guarantees DNA diversification by making the females more propense to breed with other males, but it makes sure enough males are at females' disposal for the same goal.

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