As always, the consequences of the environmental sins of the global wealthy, like you and me and most HNers, will be borne by the global poor in other places. We are all responsible for what they will endure in the coming decades.
Eco-despair is, as always, a facile psychological defense mechanism and a luxury of the most privileged. We are responsible for the problem, and we also have the most power to solve it. We need to act accordingly. Starting with a calm, rational, comprehensive reckoning of our options, including nuclear (which has made France the low-carbon leader of the developed world).
Instead of letting guilt paralyze us with delusional fantasies of a well-deserved universal doom, we should use our privilege to advance no-carbon energy and carbon capture to hopefully protect the less fortunate people whose futures truly are threatened.