In case you didn't know, DMT is a psychoactive chemical produced naturally within the brain that is released while dreaming in small amounts. During death, large amounts are released. Every living thing produces it and it is called "the spirit molecule".
Those who have a clear conscience will experience paradise that feels eternal: “heaven”.
The evil will be tormented for what feels like eternity: “hell”.
However, what goes on beyond our perceivable physical world to make it happen is beyond my pay grade at this late hour...
That is a nice theory but incomplete. People report leaving their bodies, watching their doctor operate on them when they should be unconscious, and accurately reporting on not only the goings on in the operating room from a view looking down, but also things in other rooms. That can’t be explained by DMT.
Howard Storm’s experience started out in Hell (he was an Athiest) where he was attacked by evil creatures that he says used to be people and in desperation, after fighting the things tooth and nail, he called out to Christ. This terrified the creatures and they left. Then he met Christ and after that had quite an elaborate and detailed experience. Afterward, because the experience changed him so much (Athiest to Believer) he had marital problems with his still Atheist wife and they ultimately divorced, and he fell away from his still Atheist friends. He eventually became a minister and married again to a devout Christian woman. It is hard to believe that was all caused by a drug trip.
The best book I have read regarding NDE’s is “Evidence of the Afterlife: The Science of Near-Death Experiences.” The authors list 9 lines of evidence that they believe prove consciousness separate from the body.
“My theory is that it can be explained in our physical world as a DMT-based psychedelic experience”
The problem with your theory is it does not stand up to facts. In the case of the good Dr....he was braindead...no brainwaves at any level. You cannot have the kind of experience your hypothesizing on without brainwave activity.
Second, as one who has experienced NDE I can tell you with certainty it is not hallucination. I have hallucinated with LSD, etc. when younger. There is a huge difference. If you believe that the NDE is a hallucination, then you need to contemplate your entire existence as a hallucination...seriously. It is that real.
I find non Christians have a difficult time with believing that God actually does exist and is alive right now. God does communicate with those who are with him regularly. We do not have to die to speak with God or indeed to hear from Him.