I happen to have many, many years of intensive studies in this field. OBEs are problematical. One of the early researchers/experiencers, Robert Crookall, was absolutely convinced of the reality of his OBEs until ... During one of his OBEs, he took careful note of the time and of the shadows of numerous objects. When he later correlated this with reality, nothing matched up. On the other hand, there have been some successes (Ingo Swann) indicating that something out of the body is occurring.
NDEs are absolutely not faked. In plenty of cases, the experiencer was unquestionably at the very point of death (or actually clinically dead) and had knowledge (either of medical procedures or of deceased persons in the afterlife realm) that he or she should not have had.
Where my "fake" antennae go up is with elaborate, content-laden OBEs and NDEs. Robert Monroe, for example, published numerous books detailing his extensive OBE travels in the astral realm; I give them no credence whatsoever. Over the years, as the NDE phenomenon has become well-known, the accounts have become ever-more-elaborate, full of cosmic knowledge, visits to Heaven and Hell, prophecies of future events, etc., etc. I likewise give them no credence whatsoever, even if they are explicitly Christian. I believe many of them are consciously faked (for celebrity and profit) while others have, with good intentions, "interpreted" their experiences into elaborate philosophies.
To me, OBEs and NDEs are valuable as evidence of mind-body dualism (i.e., the brain does not produce consciousness) and of the likely survival of consciousness after death. But that's it.
One of my favorite early NDE accounts was a woman who said, "I was shown the secret of the Universe. It was really, really simple. Unfortunately, I can't remember what it was."
That is beautifully summarised Runner. May you be blessed and encouraged in sharing this information with people.
Oz