When global warming first became news and of public concern, I, like most, was quite convinced of the problem, and was scornful of those who doubted it. But over the intervening twenty or so years, the more I read, the more sceptical I became.
It is sad that those few climatologists who have spoken out against the hypothesis of AGW have been so widely vilified, even though those climatologists are very experienced and at one time highly respected in their fields.
It is also sad that you seem to be going along with that vilification, a great deal of which is blatant 'ad hominem' attack with no consideration of the scientific arguments or respect for the experience of the scientists in question.