Delusion?

[Angrboda]

Believing in demons is fanciful but not delusional, agreed. Actually seeing them, hearing them, or arguing for their physical existence based upon experience with them is a fairly strong indicator of "psychotic disorders including schizophrenia, paraphrenia, manic episodes of bipolar disorder, and psychotic depression." The stories of the faithful who have confronted Satan himself (or any of his demons) aren't difficult to find. It forms a core part of these peoples religious beliefs. As such I would call people with beliefs like these delusional.
http://en.wikipedia.org/wiki/Delusion

So are stories about alien abductions. These, again, are not properly speaking delusions, as they are usually constructed using rather ordinary and mundane properties of the human mind. I think I'm getting a hint of the problem in that people are looking upon the nature of the human mind as some sort of reliable, common sense obeying, rational computer; this is an incredibly naive view of human mentation which the vast research on psychological bias and processes, memory, perception and social psychology will refute.

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Fix your quote tags, or else it would appear that you have done exactly what you're protesting. (apologies if it got garbled by the code, and disregard if this is so)

I think we crossed in the night. In the 30 seconds I took to fix the tag, you must have grabbed my errant first post.