I've tripped balls during surgery while under ketamine sedation. Saw some amazing shit (including my own mother operating on me, which is more frightening than you'd think
). None of it made me think that some god was trying to show me anything. Indeed, it just solidified the notion that the brain can do some crazy shit if its chemistry is messed with. I don't see why a NDE would be special in that regard.

"I was thirsty for everything, but blood wasn't my style" - Live, "Voodoo Lady"