We don't seek to escape this life by dreaming of heaven. But we do find we can endure this life because of the certainty of heaven. Heaven is eternal. Earth is temporal. Those who fix all their affections of the fleeting things of this world are the real escapists, because they are vainly attempting to avoid facing eternity - by hiding in the fleeting shadows of things that are only transient.
If we could condense all the truths of Christmas into only three words, these would be the words: "God with us." We tend to focus our attention at Christmas on the infancy of Christ. The greater truth of the holiday is His deity. More astonishing than a baby in the manger is the truth that this promised baby is the omnipotent Creator of the heavens and the earth.