The sad irony is that the pattern of - knowing the science enough to know they're contributing to others suffering - knowing what might happen with reasonable certainty - but compartmentalizing that awareness internally to avoid acting - hiding it externally - and keeping doing what they were doing describes the reactions of most individuals about climate change.
Personally I believe that the amount of human suffering that will be caused by climate change will be small, but I'm unable to really discern whether motivated reasoning lead me to this conclusion. The evidence presented by both sides about the amount of human suffering that will be caused is highly questionable.