The reason I won't call myself "spiritual" is because the word has no meaning.
Most Americans look at it from a Christianized viewpoint. To them, spirituality is synonymous with "transcendant morality." But I see no evidence that being "spiritual" makes you automatically moral much less transcendant.
You could be highly spiritual AND highly immoral.
I simply think there is level of reality we cannot perceive by our present experience except under certain extraordinary circumstances. I think there is some form of reincarnation but I have no idea how it really works or precisely what is reincarnated.