Are you talking about the denialism of people who reject science and the undisputed fact that the environment has changed frequently and at a high velocity, continuously, over the meticulously documented history of the planet? Or are you referring to those who reject science, and insist, despite the detailed and voluminous evidence, that human activity is the predominant cause of environmental change, without which the climate would be stable?
It is sad and pathetic that so many are unwilling to acknowledge the science and the well-documented data. It is even more sad and pathetic that so many are unable to do so. But, unfortunately, that is why society looks the way it does.