Maybe other intelligent beings in the universe didn't learn how to live with out fossil fuels, they overloaded the carrying capacity of their planets, global wa

Maybe other intelligent beings in the universe didn't learn how to live with out fossil fuels, they overloaded the carrying capacity of their planets, global warming destroyed their environments and intelligent people stopped having children? The result would be that their complex civilizations crashed. I think we have more important stuff to invest our intellects in than space exploration. All our current technology depends almost exclusively on cheap energy derived from fossil fuels. Human actions are damaging the complex processes that maintain live. If we don't fix this problems I still think hedonistic technology is a better investment than space exploration. Well at least for the average folk it's not like we can send every human in to space.