I'm Christian (Catholic, to be exact), so I don't "belong" on this thread, persay, but I wonder what counts as celebrating. Like, some of our non-Christian friends will come over at Christmas and party with us and exchange gifts...they don't decorate their own homes, but they will part with us. Another Jewish family we are friends with will usually call us to wish us a Merry Christmas, etc. A friend of mine from high school (we were in choir together) often had non-Christian friends come to see her sing, and they would sometimes come to the Christmas concert.
So, I wonder what counts, really. Especially today when the commercial side of Christmas (red and green, holly, Santa Claus, candy canes, the tree, etc.) ends up just being called "holiday," even though I don't know any other holiday that they are symbols of. So, if you don't do anything specific for the birth of Christ, are you celebrating Christmas, or just a commercial holiday?
I mean, personally, I don't go for the whole Coca-Cola Santa and raindeer type Christmas. I don't even generally put up a tree, but then I hate artificial and it makes no sense to get real when we leave town for Christmas anyways. My mother refuses to put up trees and does a nativity, but my grandma puts up both...I might do the whole tree thing when we have kids, but *shrug*. So, I don't know, but since we focus so much on the religious side of Christmas, the commercial side of putting up decorations during (and even before) Advent and taking them down before the twelve days are over...well, I don't even identify that as Christmas anymore.