Earlier quoted context omitted.
It seems that we could be headed for a mass extinction, whether or not humans manage to survive thousands of years longer. We aren’t going to entirely destroy life on the planet, which will eventually recover great diversity (speciation to fill new ecological niches in some new stable equilibrium) within a few million years after we’re gone, but it will look significantly different than what we are familiar with. Tha…
We're not, actually: https://www.theatlantic.com/science/archive/2017/06/the-ends... I used to think that we were, and when I read that article, I kept looking for flaws in its logic or counterexamples in other press. But ultimately, it interviews a real expert, and his logic is correct: we're drawn to flashy apex predators at the top of the food web, but these species spring in and out of existence all the time, and…
> “I think that if we keep things up long enough, we’ll get to a mass extinction, but we’re not in a mass extinction yet, and I think that’s an optimistic discovery because that means we actually have time to avoid Armageddon,” he said. [...]
> “The only hope we have in the future,” Erwin said, “is if we’re not in a mass extinction event.”
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I guess it’s a bit fuzzy where you draw the line. Perhaps mass extinction is not an inevitability and concerted global action or some technological breakthroughs could still save us, but it has an uncomfortably high likelihood considering how bad humans are at staving off uncertain long-term threats.