I'm religious, but it's definitely not a source of constant or even intermittent euphoria for me. I dunno...maybe I'm not doing it right. Hahaha.
Also, if all of this is just chemical reactions in the brain or whatever, then why would you name it 'spiritual' at all? You don't consider it a spiritual experience when you crave something sweet, experience tiredness, or do anything else that can also be found to be the result of similar chemical reactions in the brain, do you? And when basically everything is or can be explained in those terms, it seems like there's less and less of a reason to name it in any other fashion.
I know Sam Harris and others have talked about the problem of a lack of language to express the range of human experiences without appealing to religious terms, so maybe that's what is at play here, but I think it's a bit more basic than that.
Spirit, after all, originally meant something like "
animating principle", and thus while it often probably went hand in hand with invocations of God or gods (the linked page does include 'breath of a god' as one of the extended definitions of the Latin), I guess it could be at least conceivable that someone could believe in such a thing without subscribing to any one
particular god...except that, again, with the new understanding that everything is a matter of internal biological/chemical reactions, wouldn't you sort of be forced to declare those reactions to be your 'spirit' (animating principle), since there is no external force to believe in/thank/pray to/acknowledge for them?
So I still don't understand why atheist 'spirituality' would be labeled as such. Again, I'm going to assume that you don't call any other biological process 'spiritual' in the 'filled with awe' sense that was offered by another poster here. Even if you watch Carl Sagan's Cosmos all the time and stare at the stars in awe every single night, you're probably not in a constantly enraptured state at the realization that you are breathing and your heart is beating and all the other stuff that just sort of happens as part of being alive. If you are, you should probably see a therapist, because it seems like that would get in the way of actually living your life.