In a high-speed car accident, I broke the front-window with my head, then spent months in hospital in a pretty bad shape, unable to work for more than a year, dealing with hallucinations and all kinds of limitations and strange feelings; full recovery was highly unlikely (luckily, with some non-standard techniques, I managed to fully recover) AND a few years before that, I was about to die at least twice while still having some time to think about everything (once alone in the dark, deep under ground with no way out) - none of these crazy experiences made me religious. Even when facing death, I was always trying to put things together as logically as I could and I found no reason for believing or accepting whatever I did not have a good piece of evidence for (including the afterlife).