I celebrate Christmas each year and do no consider myself a Christian in any way. My spouse does not either and we are raising our son to be non-Christian. So why do I celebrate Christmas, because I can. We enjoy it and have fun. We do the tree, the gifts and the decorations. We do it all, but no mention of Christ in the whole thing. We know it is pagan in nature and we consider ourselves pagan and figure, "our holiday." When people say, "you shouldn't celebrate a holiday that is Christian, when your not." I laugh, HARD! Like our lives have to have some guide book or rules on what we can and can not celebrate anymore.
Get this, and feel free to laugh, I did. My mother, an extreme Witness, actually said this to me once after I left and meant it.
"Why would you leave the Witnesses, and Christianity, and then celebrate a holiday that is so Christian in nature and tradition"
Can you believe that? It's true and she said it with a straight face. I can not believe that the desperation of argument would go to a level that you would actually call Christmas a Christian holiday, when you go door to door saying it is "pagan!" In all, she felt very proud of her comment and has used it many times since. Each time, I hold back the laughs and encourage her to use it more and more.
Christmas is a great holiday to take advantage of, if you haven't yet, enjoy! Above all, don't think you have to be a Christian to enjoy Christmas. There not really connected anyway, as we all know.