The aging population is probably not going to have to worry too much about there not being enough people to take care of them in their dotage, because in disasters and failures of infrastructure, they and the very young are going to be the first to go.

Not to sound callous about it, but the culling of the human herd is sliding toward us like an avalanche. It just is what it is. Those who cannot take care of themselves and cannot adapt aren't going to make it.

Our economy, our civilization, and our use of our environment is unsustainable. That which is unsustainable cannot be sustained.

The boomer and elite rallying cry for more babies is a red herring.

Eventually the population will stabilize, if the bottleneck doesn't become an extinction event (which is possible), but it won't be at 8 billion and it won't be before civilization and environmental collapse. Certainly global civilization, if not all civilization.

If we survive as a species, there will be new civilizations. This isn't the first time collapse has happened, it won't be the last. It's just, arguably, the first time we're aware of it while it's happening.