Subject: Re: Overpopulation
I think a better way to state it would be, as the ecosystem deteriorates, it will steadily support fewer of us.

Yes, until it reaches a tipping point at which time it may not support any of us. But I can accept your quibble. :-)

In the end, nature will impose limits on us. If we're smart, we won't push it that far. The resulting suffering will be horrendous. If we take as a moral basis the maximizing of human flourishing, and minimizing of human suffering, it could be considered "immoral" what we are doing to the planet.