Why do people believe things?
We believe because we are weak.
Let me refine that.
We believe because we have limited energy.
Much of what we believe, we believe because we believe we are weaker than we are.
We believe because the elevation of an idea to a belief feels so good. It’s the end of a search.
[ Shortly after I had written the above, I encountered this relevant blog post, Born Again, Briefly, by the s.f. writer Greg Egan, describing his own experience with belief. ]