[davidmanescu]

Ballpark numbers here; by similar reasoning, since the industrial revolution humans have put out no more than 26,000 years worth of all volcanoes' emissions (say 200 years worth of 130x emissions). Therefore (obviously hypothetically) if we were to cease emitting any CO2 at all, today, the effects of all the CO2 ever produced by humans would become largely irrelevant in just tens of millennia, which is a mere instant in geological timescales!

I think in the scheme of things, no matter how bad things get the planet won't even notice us. However the question remains what life will be left to see it when it does finally return to normal.