Why do people believe in supernatural things?

People believe in supernatural things because they always need answers for difficult questions. We seek causes for events, as everything happens for a reason. We often don't like it when we're uncertain about something, this is just how our brains work - if we don't know the answer, we are stressed and we feel helpless. The easiest way to avoid such feelings is to come up with a divine explanation for a happening. In conclusion, when we believe in supernatural things, we can live peacefully without worrying about unanswered questions that bother us.