The problem with your notion is that mankind has rendered much more of the earth incapable of turning this situation around.
You're claiming that we can damage the Earth beyond a point which it can repair itself? Really? This planet was around long before us. This planet will be around long after us. Even if everything about AGW were true and we wiped ourselves out, the earth would survive. It would adapt, repair, and thrive.
The Earth has been in climate change since it was first formed as a planet. The Earth has seen VAST changes in temperature while humans and other life has lived on it. Why is right NOW the perfect temperature that needs to be kept preserved at all cost? Why not 500 years ago? Or 1000? or 10000?
But that doesn't even matter. The post you replied to already proved your point wrong. Read it again.
Living on Earth may be expensive, but it includes an annual free trip around the Sun.