> a shrinking human population will be good for the planet as a whole. The main problem is not a shrinking population but an aging one. As long as TFR is below

> a shrinking human population will be good for the planet as a whole. The main problem is not a shrinking population but an aging one. As long as TFR is below replacement the proportion of elderly increase forever. In the US right now there are 3 worker for every retired person. By 2030 it will be 2 workers per retiree. That's a 50% increase and it will continue to get worse until TFR increases. An increasingly non-working population will have a lot of bad effects.