I'm not here to defend religion, it deserves a lot of the hate it gets, but it's also hard to deny that there is a very real human experience and a form of Truth that shows itself in religious experiences. Whether they actually reflect some higher plane of reality or just some side effect of our consciousness is probably nearly impossible to actually prove like you mentioned, yet the commenter you're replying to is somewhat correct in that it's a unique phenomenon of experience that is best described through symbolism, allegory, and story telling. That in itself is a significant aspect of humanity and our relationship with others, one that I don't think should necessarily be so dismissed by people, though I understand it's an experience not everyone finds meaning in or connects with.