As a Millennial, maybe I’m misremembering my childhood, but I remember reading on multiple occasions the books of my era warning that the planet’s population was on a steep upwards rise - soon going to be 7 billion, 9 billion, 15 billion, etc. - and that everyone needed to have fewer babies. And it seemed to be pretty well acknowledged that if such a low birth rate were ever achieved, the unavoidable side effect was that the populace would get more and more proportionally elderly, but that was considered the acceptable price to pay.
And now, much of the world (except for Sub-Saharan Africa and the Middle East) has indeed gotten to a low birth rate. But instead of celebration, it’s panic, and governments trying their best to pull up the birth rate by offering all kinds of fertility incentives.
So, my question is, why isn’t the aging of the population just considered the acceptable price to pay for a low birth rate? Isn’t the low birth rate reducing human congestion, reducing carbon emission and resource consumption, exactly what people from the 1980s-1990s kept saying the planet needed?
It’s like demographers want to have a global population that is both young in age and small in numbers at the same time. That’s impossible unless there were some mass campaign of euthanasia of elderly people against their will, which is obviously immoral.