This only really matters if you think humans are really important and should exist forever no matter what. I personally think that humans are a blot on the ear

This only really matters if you think humans are really important and should exist forever no matter what. I personally think that humans are a blot on the earths history, and soon should be wiped out to let nature and evolution retake its course. From this perspective we are just following the natural course of the earth, and will be made extinct just like other various groups of large animals on this planet in the past. We may require the rare climate, but other species certainly dont and more will evolve to take the place of humans when we cannot survive on these planets conditions any longer.