Any genes that make people defect by having more children are going to be (and are currently being) positively selected.
This observation should be true throughout the history of the human race, and yet the birth rates in the developed countries did fall off the cliff...
and yet the birth rates in the developed countries did fall off the cliff...
This happened barely half a generational cycle ago. Give evolution time.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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