I would find it logistically difficult not to celebrate Xmas, or any other major holiday. This is just because my parents are just 21 minutes up the road, and I am dependent on them for certain things. So therefore, if they "invite" me to a holiday celebration, well....I go. But I have several acquaintances who see the nonsense for what it is, and don't do Xmas or especially Thanksgiving. I respect them. The U.S. is an overholidayed country.
"For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring." - Carl Sagan