Another part is the unwillingness to give up the warm fuzzy blanket that gives their life purpose. Many people would rather just believe in god rather than try to discover any evidence for one. The fear of there being no father figure in the sky that micromanages their lives for the best possible outcome is too hard for some to face.
Even if the open windows of science at first make us shiver after the cozy indoor warmth of traditional humanizing myths, in the end the fresh air brings vigor, and the great spaces have a splendor of their own - Bertrand Russell
