[tialaramex]

We don't have a solution to the waste from fossil fuels either, so... We just ignore that.

Coal in particular results in incredible toxic waste. Even if it was inert (which it very much is not) you get enormous heaps of rock you dug the coal out of and those have to be stored forever. Typically people just leave it in a big pile as somebody else's problem until one day the wind blows and it collapses and kills a bunch of people. Oops.

But even for natural gas in the best case your waste is excess carbon dioxide, which renders your planet inhospitable so that's not great either.