Throughout humanity’s history, our energy use has steadily increased, now reaching a point where it’s affecting the climate. Even if we do switch to renewable energy, we’ll continue to generate waste heat that will be put into the environment, continuing to warm our planet. Researchers calculated that if energy use increases by 1% per year, it would make a planet like Earth uninhabitable within 1,000 years. Going to space will be the only way to continue growth.
I don’t think there’s much of a point planning for things that would happen in a thousand years. (I don’t even think there’s much of a point planning for things that would happen in a hundred years.) If “advanced civilization” still exists then, it will have solved our problems and developed its own new ones.
The wise man plants a tree knowing he will never rest in its shade.
“It’s tomorrow’s problem” is exactly how we got into this mess in the first place.
Après moi, le déluge!
/s