Christmas on Wikipedia:
Christmas or Christmas Day is an annual holiday celebrated on December 25 that commemorates the birth of Jesus of Nazareth. The date of commemoration is not known to be Jesus' actual birthday, and may have initially been chosen to correspond with either a historical Roman festival or the winter solstice. Christmas is central to the Christmas and holiday season, and in Christianity marks the beginning of the larger season of Christmastide, which lasts twelve days.
And yet... *shrug* Life goes on.