The fallacy in your view is that the earth's climate will always be changing. In fact, before human activity pushed the earth's climate to a warming trend the

The fallacy in your view is that the earth's climate will always be changing. In fact, before human activity pushed the earth's climate to a warming trend the earth's climate was very clearly starting to tip over into another strong cooling (ice age) trend. Even if we manage to right the wrong with the current climate situation before the oceans rise 200 feet we will still, over the millennia, face climate trends we would like to correct for. Climate engineering is in our future regardless.