I am not religious, but these holidays mean family reunion and happiness for everybody. In that spirit, Merry Christmas!
Let's just leave the pc alone for one day and take more time for our beloved ones.
By the way, it is strange that we do not celebrate the summer solstice on the 21th of June. I think that to be logical, we should celebrate both, and celebrate around the winter tree with lights and have a thought about people on the other side of the planet which have summer, and in summer celebrated the sun and empathize for people that are in winter on the other side.
This would make it really universal, well at least, global. Like in maths, there is positive and negative numbers, there is a positive (summer) and negative (winter) solstice at the same time.