The current mass extinction was in no way inevitable, it is caused by humans. We can still have an unknowably large impact on the number of lives lost. I don't know why we should pretend otherwise.

Sorry but how will a return to a hot climate kill all life? +2c and the earth dies? It's apocalyptic hysterical thinking

Why are you thoughtlessly spamming climate denier talking points? Nobody said anything about all life being killed.