Perhaps it as to do with the fact that if you admit that you were responsible for getting yourself through a crisis, it opens up the door to the idea that God was never protecting in the first place. It's somewhat analogous to a tightrope walker making it all the way across the tightrope only to realize there was no safety net below.
Even if the open windows of science at first make us shiver after the cozy indoor warmth of traditional humanizing myths, in the end the fresh air brings vigor, and the great spaces have a splendor of their own - Bertrand Russell
