I don’t want to be one of “those guys” but if we ever do progress AI to the point of AGI we will be able to take care of an aging population without infinite population growth.
(Whether or not the oligarchs who control that AGI will decide to help people instead of hoarding that power is a different problem.)
I’m aware of that, the point is that we might not continue to have that ability in the future should birth rates continue to fall.
And yes, greed is the main driver of human suffering today, and will likely be the same in the future.