I was raised by liberals, and I was decidedly un-mystical as a kid, then I took a detour into Jungian psychology at one point, as well as Kundalini Yoga, and finally just plain old hedonism, mingled with witchcraft and satanism. I followed the same pattern over and over- I would actually believe it, then reach the point where the logic broke down. Then I would lose faith and find something else.
Finally, in 1991 I encountered Jesus Himself. So far, the logic hasn't failed, and the mysticism has been *really* cool.
Seems like no matter what system one is working with or on, there is a point beyond which one has to say, I dunno. God is just beyond that point.