In case you haven’t noticed–there are a LOT of people that don’t buy into the theory (and right now, that’s all it is…THEORY) of man-caused “global warming.”
As others have pointed out, “our Mother the Earth” has been warming and cooling for eons–millions of years before mankind. (Question: is the advent of Man the cause for the extinction of Wooly Mammoths?)
“Follow the money”–Remove the incentive of “more tax money to study whether it exists or not”–and there will be fewer that cling to the theory. In contrast, there is no incentive for the populace to believe that it is an unproven THEORY.