One part of me wishes there could be a version of this film where only scientists, rationalists, skeptics, etc. are interviewed. On questions like existence where facts and evidence can clearly inform your answer (and eliminate wishful-thinking answers), it doesn't make any more sense to treat all viewpoints equally than it does to treat evolution & creationism equally.

Still, another part of me can appreciate learning about other, diverse viewpoints even if they're not grounded in reality. The human race is incredibly diverse, and at this early point in our evolutionary development into a mature species we can't expect everyone to think strictly rationally. Learning about other viewpoints can give valuable insights into the human condition, including, perhaps, how better to educate others in the fine art of critical thinking.