I think almost everyone who is american has fun and celebrates christmas but its just an traditional excuse to party and have fun and shouldn't be taken seriously or religiously. It's just an american tradition not a religious tradition, so holidays/christmastime it's all the same thing. If you're american you celebrate christmas, it's no big deal. I have fun on halloween but I don't worship the devil! Christmas shouldn't be taken too seriously and it's just for fun. I remember last year my mother tried to get me to mass. I asked her who the #*&! goes to church on Christmas? I told her under no circumstances was I going to waste my christmas in church and ruin my holidays or waste my day off doing that depressing exercise.
I suggest that your December celebration is something more akin to Saturnalia.
Io Saturnalia!