How many Christians agree that Christmas should be for Christians only?

I got into a heated discussion this evening at work about this topic. My Co-Worker is a devout Christian (although a very hypocritical one) and he made the claim that since Christmas is about Jesus no one but Christians should even celebrate it. I countered of course with the obvious point that Christmas falls on the same day as a much earlier celebration. He would have none of that though. He was quite ready to deny it completely. So i changed tactics and asked him what he was planning on doing Christmas Eve and Day. Turns out he like many "Christians" is going to get nice and drunk on Christmas Eve and then engage in the time honored tradition of receiving and handing out Gifts. I am wondering if you consider gift giving and receiving to be honoring your Christs birth? That is giving out expensive Gifts to family and friends and receiving the same in return. Would your Christ not prefer that instead of getting drunk and being greedy that you help out the needy?