> Thanks to this attitude birth rates have collapsed in most of developed world and we have 2 pensioners for every child.

Rather thank the politicians who sold you a pyramid scheme as a pension system.

Reducing the population by having a low birth rate is good. But mathematically it cannot be so forever. To maintain a non-decreasing population you need 2 children per woman on average, doesn't matter if your country has 10^4 or 10^8 people.

Immigration is only a temporary solution, it may not be a reliable solution by the end of the century. Global birth rates are falling and QoL is slowly improving, reducing the incentive to immigrate. Saying this as an immigrant myself.

Thanks to productivity gains in the last 100 years, that's not a problem. We have a solid amount of people not working, we don't have a shortage of workers in general, we're lacking high skill workers, and workers who are willing to do shitty jobs. We can solve the high skill issue with education, and the latter with better wages for e.g. elderly care and nursing.

>>Thanks to this attitude birth rates have collapsed in most of developed world and we have 2 pensioners for every child.

Maybe they should have thought about that before they based retirement on the Ponzi Scheme of income based taxation

> birth rates have collapsed ... Between this and climate catastrophy

No, it's the other way around.

Lowering birth rates is the very best thing we can do to ensure sustainability.