Spirituality is about the practice and inner peace- you can a paganist, believe in one god, a different god, or none. But according to religious fanatics, all spiritual people don't believe in a God, (which of course isn't true as I said earlier).
Personally, I believe in a Jesus even though it may be different than how they see him (watch me get shit for that in the future). The next time they reply to how I'm going to hell, I just reply with, "Sorry for the late reply. We were just doing a ritual sacrifice. Since that's what us pagans and spiritual people do."
I haven't seen any spiritual fanatics though :/. At least the ones I've met don't really care what other people think or believe, especially of us. When an atheist or religious fanatic goes on our pages and starts ranting, we just do the "ugh *face palm. mark as spam* thing." I think we just get annoyed for people telling us what to think or what to believe. We're not sheep.