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>I think more people should choose not to have kids and our societies/governments should stop pushing so hard to have more due to traditional values or so economies can grow.

If your retirement plan is point blank shotgun than this is sustainable. Otherwise pray for automation, depending on how old you are, it might work out.

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It is a pyramid scheme though, each generation needing to be bigger than the last to support the previous generations retirement. It has to end at some point.

Not really - you can increase productivity, the end game of that being full automation.

Lifespans are increasing and automation claims turned out over optimistic so far - if you are close to retirement the last thing you want to see is a shrinking working population, shortages and inflation.

Each generation doesn't have to be bigger than the last. Two people create two children, those two children create two children, the grandparents die, the grandchildren create two children, etc.

That stabilizes the population (technically population goes down due to accidental deaths, diseases, etc. but you get the idea).

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