I have studied the science on AGW and believe the central hypotheses to be true. However, I reject the moralization that has become the bread and butter of environmentalists. I've had many "ends justify the means" conversations with people who believe they can/should make energy usage a moral issue.
It's a science and engineering problem, not a moral one. The religious fervor around much of the environmental movement (complete with significant social virtue signaling) turns me off both the person and the message by association.