Friedrich Nietzsche predicted that secular people, losing touch with transcendence, would eventually lose a reference point from which to look down and judge themselves. In the end they would lose even the capacity to despise themselves. Thus, because of the 'death of God', they would confuse heaven with happiness, and happiness with health.
Os GuinnessWhat has happened to create this doubt is that a problem (such as a deep conflict or a bad experience) has been allowed to usurp God's place and become the controlling principle of life. Instead of viewing the problem from the vantage point of faith, the doubter views faith from the vantage point of the problem. Instead of faith sizing up the problem, the situation ends with the problem scaling down faith. The world of faith is upside down, and in the topsy-turvy reality of doubt, a problem has become god and God has become a problem.
Os Guinness