The dream of a white Christmas satisfies a need for hope deep within us.  The ideal of a white Christmas also speaks to the old pagan festivals. The winter solstice (Yule, Saturnalia) was a time of hope in the cold and darkness, as nights stopped getting longer and people looked for the promise of new birth in springtime. The Christian Church recognized the power of existing winter festivals and chose December 25th for their own nativity celebrations. People still feel a need to move in time with the seasons, and snow represents winter at its most extreme. For these reasons the dream of a white Christmas satisfies a need deep within us.