Supernatural beliefs might not make sense, but they endure because they're so emotionally satisfying
Nevertheless, it’s not the case that there are no limits to what can be accepted as a religious supernatural belief. Scott Atran and Pascal Boyer have independently pointed out that actual religious superstitions over the whole world constitute a narrow subset of all the arbitrary random superstitions that one could theoretically invent. To quote Pascal Boyer, there is no religion proclaiming anything like the following tenet: “There is only one God! He is omnipotent. But he exists only on Wednesdays.” Instead, the religious supernatural beings in which we believe are surprisingly similar to humans, animals, or other natural objects, except for having superior powers. They are more far-sighted, longer-lived, and stronger, travel faster, can predict the future, can change shape, can pass through walls, and so on. In other respects, gods and ghosts behave like people. The god of the Old Testament got angry, while Greek gods and goddesses became jealous, ate, drank, and had sex. Their powers surpassing human powers are projections of our own personal power fantasies; they can do what we wish we could do ourselves. I do have fantasies of hurling thunderbolts that destroy evil people, and probably many other people share those fantasies of mine, but I have never fantasized about existing only on Wednesdays. Hence it doesn’t surprise me that gods in many religions are pictured as smiting evil-doers, but that no religion holds out the dream of existing just on Wednesdays. Thus, religious supernatural beliefs are irrational, but emotionally plausible and satisfying. That’s why they’re so believable, despite at the same time being rationally implausible.