I'm not sure where the illusion comes from, but not from religious faith, because I'm an atheist, and I have the same thing. For me, I think it's a matter of necessity. When I think about all the things that could so easily happen to me or my loved ones, I get so frightened that I become paralyzed, unable to live my life. The only way I can leave the house, go to sleep at night, etc., is to force myself not to think about all the horrible things that might happen. I have my moments of fear, of course, but if I let these concerns stay with me all the time, I think the fear itself would destroy me.