You are also ignoring people who say they are religious on a 'just in case' basis. 'Well, I don't really know but it does no harm...' It is like a superstition and it is so deeply embedded in our society it is little wonder that people say they are religious when all they really are is afraid of not being. I don't walk under ladders (although that one is quite sensible!) and say 'bless you' when someone sneezes. Doesn't mean I believe in such nonsense. Touch wood...