answer:Isn’t it safe and intellectually honest to remain sceptical of any sort of proposition until proven otherwise? Particularly if they rely on things not proven to exist, since they would need the additional proposition that this thing exists to be true in order to even be possible. And particularly particularly if they rely on things for which it’s not even proven that they can exist, because such a proposition would hinge on the truth of the additional proposition that this thing exists, which hinges on the truth of the additional proposition that it is possible for this thing to exist. When you multiply the probabilities of all those propositions with each other, you’ll end up with a very low prior probability that takes a heckload of evidence to crank up to a level credible enough to even think about. I’m also not clear on what exactly is the defining feature of things you call ethereal. An “airy feel” to them?