My point was that the human experience, all throughout history, hinges on a willingness to identify with deities, so it must be a reasonably effective evolutionary strategy. A deity is the ultimate expression of an applied ethics system, and it seems that in evolving consciousness we tend to unify around cosmological explanations for our behaviors.

Perhaps schizophrenia is a functional mutation that introduces cosmological insight to a group of people; the witch doctor/seer archetype, for instance.

It's obvious that deities are (as of yet) born of un-falsifiable hypotheses, although thank you for pointing that out...