I'm not religious, but you don't have to believe to wish a Merry Christmas. In English-speaking countries (and many other countries) December 25th is usually the day on which Christmas is celebrated. So wish your fellow Gotwootians a happy holiday.
My wife and I had our own private celebration yesterday morning. She loved all the stuff I gave her. Right now I'm at work playing Christmas Music on the air. When I get off work in the morning I'm leaving the station and going to see my family.
So what's everyone else doing?