In today's WSJ, Bret Stephens looks at the three motives for belief in global warming:
The first is as a vehicle of ideological convenience. Socialism may have failed as an economic theory, but global warming alarmism, with its dire warnings about the consequences of industry and consumerism, is equally a rebuke to capitalism. Take just about any other discredited leftist nostrum of yore--population control, higher taxes, a vast new regulatory regime, global economic redistribution, an enhanced role for the United Nations--and global warming provides a justification.
A second explanation is theological. Surely it is no accident that the principal catastrophe predicted by global warming alarmists is diluvian in nature. Surely it is not a coincidence that modern-day environmentalists are awfully biblical in their critique of the depredations of modern society: "And it repented the LORD that he had made man on the earth, and it grieved him at his heart." That's Genesis, but it sounds like Jim Hansen.
Finally, there is a psychological explanation. Listen carefully to the global warming alarmists, and the main theme that emerges is that what the developed world needs is a large dose of penance. What's remarkable is the extent to which penance sells among a mostly secular audience. What is there to be penitent about?
As it turns out, a lot, at least if you're inclined to believe that our successes are undeserved and that prosperity is morally suspect. In this view, global warming is nature's great comeuppance, affirming as nothing else our guilty conscience for our worldly success.
In "The Varieties of Religious Experience," William James distinguishes between healthy, life-affirming religion and the monastically inclined, "morbid-minded" religion of the sick-souled. Global warming is sick-souled religion.