We humans have had a good run, haven't we?
It takes a long time to kill something strong--Sears still has nine stores left, even though it's been dying for 50 years (since before e-commerce!)
As for we humans, #COVID19 continues to mutate, bird flu is gaining traction, global warming is accelerating, billionaires are threatening democracy to increase their wealth, nationalism is rising, and Russia expanded its bioweapon labs. I wonder how long we have--it could be centuries, but maybe not.