Why Is Anybody Convinced There Is A God?

Re perceptual content, I'm a "direct realist."  It's worth noting that epistemically, there's no justification for saying that anything is an illusion unless we (a) know how it really is, but (b) know that our perception of it doesn't match how it really is (for the sorts of reasons that normally account for illusions).  However, if we know this, then we completely undermine the notion that everything could be an illusion.  If we don't know (a) and (b), there is no grounds for saying that anything is an illusion.  So "everything is an illusion" is quite nonsensical.