I think everyone has to be technically "agnostic" when it comes to immaterial beings including theists-- we can't "know" whether such beings exist or not, but since they tend to be indistinguishable from non-existent (or mythical) beings, it's rational to treat them as such.
In my experience it's theists who claim knowledge they don't actually have. It's they who claim to "know" certain invisible beings exist (gods, souls, angels, and demons) while being certain that others don't (Xenu, fairies, incubi, Thetans, invisible penguins, gremlins etc.) Moreover, they often claim to know what these invisible beings did, think, do, want, etc. Of course, they don't agree with each other, and brain scans show that theists tend to imagine that their god thinks just like them.
Just a moment... Atheists don't lay claim to divine knowledge or "higher truths". I want to know what believers are using to determine the real immeasurable entities and realms from the imaginary ones. I don't think there is a valid method for doing so, though every believer in the supernatural seems to think they've found the secret. I'm not even sure I've heard a clear definition of god.
I see no evidence that any immaterial/divine/magical beings exist and so I disbelieve in all of them. I think if there were evidence for such things, scientists would be testing, refining, and honing that evidence to distinguish such things from illusions. I don't even know what an immaterial being would be-- how it could think or feel or perceive anything without sensory organs and a brain. As far as I'm concerned, they are all cut from the same cloth as the proverbial emperor's new clothes. Sure, there
could be invisible fabrics that only the "chosen" can see, but...
A lot of agnostics seem to think that agnosticism is "being on the fence" about the existence of god-- but why would you be on the fence about god if you aren't on the fence about gremlins or invisible penguins? Heck I'm not even on the fence about alien visitation. I don't believe that aliens are visiting people even though I understand that some people truly believe they ARE getting such visits and there are very likely to be aliens on other planets.
I think a lot of people fear consequences of non-belief in god, and so they claim to be on the fence in case some invisible overlord cares and would punish them for lack of faith. I also think the religions have indoctrinated people to hear the term "atheist" as being scary. People have been indoctrinated to believe that "having faith" is the equivalent of "being moral".
Edited by articulett, : No reason given.