Human societies driving themselves into death and oblivion predates modern technology. Boom/bust farming/famine cycles, for instance. The collapses weren't "hug

Human societies driving themselves into death and oblivion predates modern technology. Boom/bust farming/famine cycles, for instance. The collapses weren't "huge swaths of the planet"-wide but that didn't make them any less devastating. Yes, you could have a meaningful life anyway - you could also have a meaningful life today. Don't blame climate stuff for that if you aren't happy! (Hell, even non-technological animals have gone extinct countless times over the ages.) The only constant through the ages has been trying to stemp the tide of the larger forces that would destroy your society.