It's because the book off all answers, the bible, seems to have everything a devoted Christian would want, so they turn to it. Except of course when they get cancer and they can't find the riight bible verse telling them what to do.
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