Like fish in a net, all of us are caught up in various lies at different times in our lives. Many begin by believing in the cheerful fiction of Santa Claus. That prepares us for a reality composed of alternatives. No one is harmed by such beliefs, but one should begin to realize that free lunches do not exist. But, if one believe that too exclusively, it becomes impossible to believe that Christ freely chose to die for our sins.
So, we have happy days when we think Santa brought us our presents. We have a happy day when we realize that we have to earn our own living. And, we have the happiest day of all when we realize that the mind-bogglingly powerful God Who programmed the entirety of Creation willingly died to save us from the programming errors that keep us from the perfection we seek.