Here is a short quotation from a PBS interview with a well known Climate Scientist. He is also one of the leading global warming "skeptics". His years of experience gives him a view of the "big picture" on this issue and he should be taken very seriously. He's not trying to fool anyone.
I think he gives a partial answer to the question of why so many people believe this global warming nonsense:
"The federal government pumps about $2 billion a year into climate research. Now, this money has to be spent by someone. It supports a lot of jobs. It supports a lot of people. And inevitably, many of these people begin to feel that what they're doing is tremendously important and vital. Otherwise, they couldn't really live with themselves. They've talked themselves into the fact that the work they're doing is somehow helping humanity deal with some kind of a problem."
From an interview with Dr. S. Fred Singer, an atmospheric physicist....see the entire interview at: