Glacial ice melt in Greenland alone means sea water levels will rise from at least 3 inches to more than 10 inches by the end of this century. If I live my expected life span of 10pm years, I will have witnessed sea level changes that alter the costs and borders of the globe. Average air temperatures will rise, and much of the now inhabited earth will be underwater or desert. It’s not as if suddenly, in 2100, sea level will jump from what it is now to 10 inches more. The next eighty years look to be a rapid loss of habitable areas, killing humans, animals and plants.
It will take huge effort and dedication of resources to even slow these changes by a small amount. So far, those resources have not been committed to saving anthropogenic Earth.