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Natural selection predominantly works before you breed.

There are some kin effects if elderly are killed, but natural selection otherwise doesn’t apply much for the elderly.

True! If it would, then male baldness would have been "natural de-selected" a long time ago. But since men are getting bald mostly after they had their offspring, partners (nature) cannot select on this...

women don't mind bald men, it's just different women. which can be hard to accept.

balding men on the other hand, not confidence inspiring.

I'd argue that killing off a source of wisdom and knowledge that hasn't been fully passed down hurts the species as a whole. This isn't a counter to your point, just another perspective.

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