I like the rich, years-old traditions surrounding Christmas, including both religious ones and secular ones (like the Christmas tree). I like the celebration of Jesus' birth, and I like the spirit of celebration of the winter solstice, and the associated pagan traditions which have fused into Christian traditions to form the holiday that we now know as Christmas.
However, I strongly dislike the commercialism of Christmas. In the United States, Christmas has become a holiday that glorifies consumerism. I find this abhorrent on so many levels; for one, it strongly conflicts with the teachings of Jesus and the central tenets of Christianity, and it is thus a glaring example of hypocrisy and contradiction. But religious questions aside, the commercialization of Christmas is disturbing on so many levels.
The media sends the message that we need to spend money in order to show our love to people. This couldn't be farther from the truth, and it's a very unwholesome message. Also, people are encouraged to buy things for others that they don't need, and to spend money in unsustainable ways, at big chain stores in big suburban shopping plazas, on cheap goods made in China sold at jacked up prices. Children are bombarded with advertisements and are induced to pressure their parents into buying them material things, and are implicitly sent the message that if their parents don't buy things for them, it means that they love them. It's totally perverse and outright evil.
I think we'd be better off if people would just make a hand-made card and give someone a hug and tell them "I love you." That says more than any amount of spending ever can.
So yes, I like Christmas, I just don't like the way it has been corrupted and commercialized to support consumerism.