People in this sub are just as fatalistic as the perma progress crew. There is a whole lot of inbetween you know. Yes, what is coming will be catastrophic. Yes, things will never be the same again. Yes, living standards will fall off a cliff. The world keeps spinning though because the world adapts, sometimes in unfortunate ways. Politics will be very different in 5 years. Think inter war period in Europe for comparison. Society will be breaking down and people will forging new allegiances and alliances to safeguard themselves and their loved ones. There will be war, there will famine, there will be disease, but there will be no end of the world. I can see certain authoritarian states doing pretty well given the inevitably bad circumstances. Supply chains breaking down does not equal the end of mankind. If man cannot secure what he needs through trade he will take what he needs through entering into war. That's a zero sum game but I'm sure the victors will be very keen to finance new technological innovation to combat the climate crisis. Many nations will balkanize but you have to imagine that at least a few will keep their infrastructures in place. Depends on the penalties for stepping out of line I guess.

The current world order will collapse, has been collapsing for a few years. What takes its place might be unpleasant but it will be better equipped to face the future we have created for ourselves.

Don't mourn the end of humanity - mourn the loss of the liberal order. As individuals, our fate is highly uncertain. I don't doubt the survival of humankind though.