This might seem like a nerd quibble, but I think it's important to a healthy wordview about this stuff.
>>There's no such thing as an organism that doesn't consume.<<
William Ralph Inge wrote:The whole of nature is a conjugation of the verb to eat, in the active and passive.
Biologically modern humans lived a basically evolutionarily stable way for tens of thousands of years before getting on the path of planetarily unstable methods of living. Daniel Quinn, in The Story of B, refutes the idea that our current trajectory was or is inevitable. It is *not* the case that humans have been on this path since the beginning; we were doing just fine* until a certain point, and then things started going off the rails when we changed our culture in such a way as to attempt to live in ignorance of how reality works. He claims that getting on this trajectory was a fluke, an accident, *not* pre-ordained.
This to me is a way to avoid the trap of getting too down on humans as a species - yes populations consume and all that you said is perhaps true, but the scale and *quality* at which modern humans are consuming is not how things have to be. Our current cultural arrangement has us trained to consume even past the point of satiety, at *all* scales you can think of consumption, which is different than how most species simply eat to satiety. Population booms and busts are a part of ecological stability, not a sign of its failure - it's called "dynamic equilibrium" with an emphasis on "dynamic".
So in short, if we think that humans are inherently, biologically foredoomed to wreck absolutely everything, there's no way to have a healthy worldview.
But if we can realize that that narrative is just an inversion of the Myth of Progress, that humans are *not* predestined to be either brain-in-a-computer Singularity Gods on the one hand or world-wreckers on the other, and that instead we simply stumbled across an evolutionarily unstable
cultural adaptation... well, to me there's hope in that, because it suggests it's possible for the error to be corrected, and furthermore for my life to be part of that correction.
*(I'm not suggesting pre-Civ humans were angels, never caused megafaunal extinctions, or were doing what they were doing "on purpose" because they were in communion with Mother Gaia. I'm also not suggesting that the Neolithic/Paleolithic lifestyle is the only possible solution going forward.)