Could it be that faith is what generates or 'creates' an afterlife? Could it be that belief in God or an afterlife is what opens the door to an alternate reality?
Consider:
Quantum Theory Demonstrated: Observation Affects Reality
Experiment confirms quantum theory weirdness May 27, 2015
Maybe there are things we are destined never to know...
Destined implies direction. Are ya sure you wanna go there? :-D
Faith?
Isn't it odd how all these types of conversations come back to faith? I believe you're right, though. After all, reality molds itself according to observer expectations, and faith is what gets us there. I think there's a clue, here, as to why all of the disparate religions of the world insist on theirs being the "one, true God." If reality is molded by faith, then each of the disparate belief systems is right...for those who adopt that system. When I die I will return to a loving God full of limitless compassion and mercy whereas, say, a Muslim will return to ... 'allah.' Shiver me timbers!
Yes, some do, but must have had some sort of spiritual belief in the first place to believe that the illusion is a spiritual event rather than a purely physiological effect.
I do not deny that such events occur, but do not believe them to be more than internal. It's possible that a certain self-generation occurs, but as I am not a psychologist or neuroscientist I don't know how they work.
(Similar events usually noted anecdotally include the feeling of looking down on one's self from above, suddenly falling when actually lying in bed, and certain "ghostly" visitations. These have been investigated, and are just short-term, internal phenomena. The difficulty is that for years the anecdotes were dismissed as foolish, rather than accepted as having genuinely been felt, so realised as internally-generated illusions that can be studied properly.)