Pete,
I understand your point of view. I tend to trust sciencea great deal more than mysticism, but you have to admit that the Quantum world does make one ponder the supernatual,.. do to all its weirdness.
My personal feelings are be open minded to a degree but not so much that your brains fall out.
It could possibly be that those who go into trance states and manage to climb deep inside themselves have found out some interesting things about human consciousness. If evolution is still not finished evolving our brains to even more usefulness, then maybe some have tapped into this ahead of the general population. Not that we should beleive eveyones claims in this reguard, just open to possibities.