To more directly answer your point. Things always seem to be bad until they're not. And we are on virtually any measure you'd care to look at, better off than we were a century ago. The temperature may rise x celcius, empires may fall, there may be wars, but this has been an unusually peaceful period of history, wars happen anyway, and people probably wont mourn the non existent ice caps that they heard used to exist, just like we don't mourn the dodo.
If we say went back to something equivalent to 1918 Europe. Yes we would have lost a lot, both life and infrastructure, with Spanish flu still on the horizon, but we will rebuild and get on with life, would you expect climate change to be worse than that? And look where we are, a century later.
Turing to your comparison between 1918 and now, I daresay global climate change will be a great deal more severe than the cumulative effects of both the First World War and the Spanish Influenza combined. The magnitude of geopolitical strife we have set ourselves up for is of an almost unimaginable scale.
The worst thing about depression is that you can't see a way out, until you are out, and then the path is astoundingly obvious, and the journey so easy. I could say it will get better, but you probably wouldn't believe me. Please do believe me when I say it doesn't take effort to be understanding though.
On to a sunnier subject. I can't see us going mad max, I think worst case doesnt interrupt civilization, which implies keeping at least our current know-how. Could there be a lower standard of living, yes. Lower than a century ago? (while keeping antibiotics, computers etc) Maybe. But that would still be a higher standard of living than we've had for the majority of human history.
Would you like to suggest a better comparison.
I used to be very harsh with Germans collectively for having ‘allowed’ Hitler to come to power and for having been complicit in the crimes he perpetrated. But now I’m not so sure. I’m not sure if the grim spectacle going on in the US is proof or refutation of my distaste. Does it show how easily dysfunctional evil can mesmerise the population into allowing it to govern, or is it proof that many people are putting up a damn tough fight to make sure that evil does not flourish and take root? I’m not sure.
As a German, so did I. But my illusion of control dissolved in the face of doom. There is nothing you can do but hope for the best.
There’s something truly amazing of the enormity of what was done, and the knowledge that one oneself is somehow tethered or rooted in it, that just causes one to instantly condemn. The more nuanced view... it feels like weaselling out and making excuses, like apologists do.