In the purely speculative fiction mindset of “what if”, I am kinda fascinated by the idea that nature will eventually find a to deal with our hubris. We can make the planet uninhabitable for ourselves as we know ourselves and the other living beings we currently see living around us. Because we know this and are aware of the potential we should use that same awareness to lessen the impact, not just for ourselves but because there’s living being who can’t stop or lessen the impact of what we’re doing. But give the planet a few more hundred million years and on the off chance there’s still a hominid lineage kicking it, they won’t be Homo sapiens as we recognize them and while our plastics are unnatural, Mother Nature will eventually find a way to make due with what we’ve done or recycle it. That’s not nihilism or an excuse to not care/prevent, just the reality that we’re a brief moment in geologic time even if we’ve utterly fucked the current environment during our stay.