Why are people having these experiences?
Because there are chemical and physical processes (which we have evidence for) going on in their brain that other people do not have.
Your argument hinges on finding a causative mechanism between these experiences and the physical workings of the brain.
We haven't found it yet. For now, this boils down to a simple unsupported assertion. We barely have ideas about the NCC (neural correlates of consciousness), let alone the causative mechanism for consciousness.
Although please feel free to correct me if I'm wrong. 'Cause if we do have such studies done, I would LOVE to read them!
(P.S. not sure if anybody welcomed you to the forum yet, but ... welcome to the forum!)
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