Funny thing is, we used to live sustainable. If it wasn't for the big push to get us off the farms, we would have many of these issues we have today. As a child I remember how my Grand father lived on his farm. Water well, used oil lamps from his slaughtered animals (he had electricity connection but used sparingly), wood stove for heat, summer kitchen for cooking in summer, burning fallen trees, dead brush and underbrush, all food waste went back into the soil, free eggs, milk and meat from his animals. He relied on no one. Sold some produce used the money to buy what he needed or couldn't produce.
That was just 40 years ago. He was not polluting, mountains of garbage, factory farming, plastic bags, toxic air etc. He lived as close as ideal as you could.
Then everyone wanted to live in the 'big city', now most cities are trash and pollution makers. Too many people in a small place. Everything falls apart.
It won't be climate that destroys us, it will be the degradation of society. Crime out of control, health out of control, youth lost, no replacement for key career positions, tech destroying intelligence...So when people say we are doing all that and need something better-Well we had something way better, and we ruined that!