Concepts of deity which are emergent are vastly more useful than those which are fabricated, because they have recursive information depth.
Purpledawn's gods evolved; JumpedUpChimpanzee's are designed.
Both are designed (though the ultimate source is under dispute whether from the supernatural entities themselves or from humans). The difference between PD and JOC's existence of such deities are in amount of time this extrasomatic information (not inherent to the genetic/biological information of the human body/mind itself) have been allowed to accumulate and compound (evolve). If JOC was clever enough he could probably invent somewhat believable supernatural entities and given enough time people would believe they really existed. Case in point, L. Ron Hubbard’s invented, yes invented, religion Scientology, only 50 some years old or Joseph Smith's Mormanism (or now more commonly known Latter Day Saints).
The real question is: can anyone provide verifiable (and falsifiable), empirical evidence that such supernatural entity(ies) exist. That is the question that demands an answer.
One of the saddest lessons of history is this: If we've been bamboozled long enough, we tend to reject any evidence of the bamboozle. We're no longer interested in finding out the truth. The bamboozle has captured us. It is simply too painful to acknowledge -- even to ourselves -- that we've been so credulous. - Carl Sagan, The Fine Art of Baloney Detection
"You can't convince a believer of anything; for their belief is not based on evidence, it's based on a deep seated need to believe." - Carl Sagan
"It is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring." - Carl Sagan, The Demon-Haunted World