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https://m.youtube.com/watch?v=rwwXz4ygS7g
Women typically choose taller men over shorter men
Shorter men typically live longer
This means women choose the next generation of men to have a shorter lifespan than if they typically chose the shorter men instead of the taller men
Unless maybe being chosen more often by women causes your life span to decrease
In which case if women switched to choosing shorter men more than taller men then shorter men would live shorter on average
@shortstories there was an example of elks having bigger and bigger horns every generation because of female hypergamy.
One terrible winter came and all the elks died. The only thing left was the cold laughter of the MGTOW elks with small horns in the wind.