You can imagine that a pagan like me is not particularly concerned with the birth of Jesus Christ. As for New Year's Eve on the 31st, I'm too much of a snob to want to celebrate at the same time as everyone else.
Yet, I really like the holidays.
Precisely because (almost) everyone celebrates at the same time. Kind of like Sunday. We agree not to do anything on the same day and everyone chooses how. Parks, walks, vacations, biking, family, Satanist masses.
So little we agree on.