Or remember the 1970's when all the talk was about how we were entering the next Ice Age. Your comment about this being more of a "religion" than science is dead on. The Manmade Global Warming adherents treat their scientific colleagues who express skepticism in virtually the same way the Roman Inquisition treated Galileo when he said "excuse me, but the Earth revolves around the Sun." - "Heresy" they screamed, just as the MMGW crowd scream "heresy" at global warming skeptics.
Another explanation is "herd behavior" of "herd effect."
One can see it in many endeavors, from small herds up to political herds. Example one, parking your car in a huge parking lot: Park your car in a far distance parking space at the local mall. There will be many empty parking spaces between your car and the other cars closer to the mall. Come out an hour later and usually you will find another car parked next to yours.
Political parties are another example, we see it here in our country and in other countries. Each core party presents it's message and gathers adherents, like flypaper gathers flys.
We can see it in almost all human endeavors, in the schools, churches, economics, science, riots, etc., etc. Even here on topix.
As far as climate change goes, if anything we are still in a receding phase from the last ice age where temperatures will rise along with rising oceans and receding of the ice shelf, hence the receding of glaciers.
The appox 52,000 years of travel of the earth through the zodiac signs has huge cause and effect upon earth's environment, in addition to natural conditions on earth; and for man to assume he can pinpoint any one element, or part, of the total cause and effect of what causes climate change on earth is nothing more than sheer stupidity.
But being that man has a propensity toward herd mentality, it comes natural that folks will climb aboard the train that will provide them a lifetime of monetary security, whether false or not. The baseness of man demands such, just ask any libroach on topix.