Those who can't accept Christ in their lives revel in all the "proof" that certain aspects of the Christmas observance seem to be rooted in pagan traditions, or were culturally created sometime after Christ's birth. They view this as justification for trivializing the Christian observance as just one of a multitude of different, but equal, reasons for celebrating December 25th. And indeed, we know that the holiday has become trivialized and commercialized so that the birth of Jesus Christ is just one of a myriad of messages that make up the background noise of the season.
But those that enjoy demeaning Christian tradition of this holy-day miss the real point, because they continue to dwell in the dark.
1In the beginning was the Word, and the Word was with God, and the Word was God.
2The same was in the beginning with God.
3All things were made by him; and without him was not any thing made that was made.
4In him was life; and the life was the light of men.
5And the light shineth in darkness; and the darkness comprehended it not.
6There was a man sent from God, whose name was John.
7The same came for a witness, to bear witness of the Light, that all men through him might believe.
8He was not that Light, but was sent to bear witness of that Light.
9That was the true Light, which lighteth every man that cometh into the world.
10He was in the world, and the world was made by him, and the world knew him not.
11He came unto his own, and his own received him not.
12But as many as received him, to them gave he power to become the sons of God, even to them that believe on his name:
13Which were born, not of blood, nor of the will of the flesh, nor of the will of man, but of God.
14And the Word was made flesh, and dwelt among us, (and we beheld his glory, the glory as of the only begotten of the Father), full of grace and truth.
Arguments about the observation of a holiday are moot. Believers shouldn't expect non-believers to respect something they can't see and deny vehemently because they can't. All we can do is show love and humility in our observance of the coming of Christ, and hope that in some small and gentle way we can help bring some into the knowledge of the True Light of Christmas, the One who was born for all.