I think anyone who relies on an imaginary friend for spiritual guidance is seriously lacking mental capacity. I wanted to say it that simply and strongly, and wanted to come out swinging. Find me a reasonable person who disagrees, and I'll go home and shut up.

One problem though: My definition of a reasonable person does not include any person who talks to imaginary people, or unseen and unheard beings that cannot be corroborated by another independent and skeptical observer.