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Old 12-24-2019, 05:53 AM
eburacum45 is offline
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Join Date: Feb 2003
Location: Old York
Posts: 2,949
I'd guess that by the time we have extended lifespans, then fertility and procreation will be managed as well. Most humans might even be born in artificial wombs, or as the result of invitro fertilisation; I'd be quite happy to see male pregnancies as well, although that's not a condition of the OP.

Maintaining a comfortable level of population would then be a matter of choice. I like to think that we could do that with relative ease, since there would be no hurry to have children, and some people would put it off indefinitely. But some people might instead attempt to max out the number of descendants they produce, and in due course these would start to affect the demographic makeup of the population.