I hate to say it, but I have been feeling the same way recently. I just don't see humanity being sustainable on this planet if we are relying on constantly producing more and more people. There has to be an equilibrium of some kind.
I mean, a one child policy would be more sustainable than a zero child reality.
I doubt anybody wants to produce more and more people. Most predictions for total population size I have seen are rather asymptotic.
We should discuss and reason about population size (where we are, where should we be, what should we do), but with a bit less passion. 30 years ago people were all doom about "over-population" and now I see all doom about "under-population".