Does reciting this stuff make you feel better?
Many "experts" do not doubt the reality of AGW if by expert you mean scientists who are actively publishing research material in climatology and related fields. Surveys of the literature and of expert opinion have repeatedly shown an overwhelming expert assertion of the realities of AGW.
This, incidentally, is why all major scientific organizations that have a public position also assert the reality of AGW.
Newtons theory of gravitation is "just" a theory, Einsteins work on special relativity and general relativity are "just" theories, that HIV is responsible for AIDS is "just" a theory but they fit observational evidence extremely well. The same is the case for AGW.
The nonsense currently being flung about declaring there is not "proof" is utterly irrelevant. There is no "proof" in science and never has been. Science is about observational evidence and testing theory against observational evidence. Formal proof is a matter for mathematics and is not the same thing at all.
Does reciting this stuff make YOU feel better?