Of course there is a limit. But population is soon going to start falling. Look at https://en.wikipedia.org/wiki/Total_fertility_rate https://en.wikipedia.org/

Of course there is a limit. But population is soon going to start falling. Look at https://en.wikipedia.org/wiki/Total_fertility_rate https://en.wikipedia.org/wiki/Total_fertility_rate the chart on the right. We're currently at 2.36 fertility rate and falling rapidly. 2.33 is what is necessary for replacement. The US is at 1.9 and Europe is 1.59.