The problem with out of body experiences and views of the afterlife, is the recognition of a very vital mechanism that has only been discovered recently; that is, upon death your brian releases ALL your seratonin, dopamine, and endorphines. Essentially, if you understand the mechanism of psilocybin (magic mushrooms) and other entheogens/hallucinogens, when consciousness survives beyond gross brain function, this would be somewhat equivilant to the ultimate morphine, ecstasy, and mushroom trip.