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.
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".