Home, the only place I really want to be on Christmas Day!
When we first got married we usually went to my parents house. We would have gone to her parents home the week before or the week after. They were much older than my parents so that was pretty low key.
After the kids were born, her mother had passed so we always invited her father down from Canada for a few days and decided that it wasn't fair to the kids to tear them away from their treasures from Santa to hang out with "old" people. With all that in mind we started hosting Christmas for our family, plus her father and my sister, (BIL) and nephew, my mother and father for the next 15 or so years.
When I first moved to North Carolina, after both of my daughters and their young families had moved down here, I followed. By then my wife and I had been divorced for around 10 years. She was the only one of our immediate family except my sister and my nephew that were still in Vermont. By then her parents and mine had passed.
The first couple years my youngest hosted and we all spent a lot of time together on Christmas. Then, they both figured that since they were the ones with the kids, they stayed home and it started being my job to commute from each household on Christmas day. Before we moved my parents always had a traditional party on Christmas Eve with family and friends. It has been a tradition that my girls carried with them and still do, just differently. Now we all get together at my oldest home on Christmas Eve with lots of individual dishes served casual buffet style. On Thanksgiving my youngest hosts the Thanksgiving feast and gathering of all of us together. So even though we do stuff separately and together through out the year, it is much more things like birthdays or celebrations or just BBQ's.
Sometimes I feel like a fifth wheel, there because of presumed obligation, because I don't have the room or the energy anymore to entertain. I did do the holidays before we moved to NC but I had the room then and the grandchildren were small and didn't take up much room.

I do have to participate in the food for Thanksgiving, Christmas and Christmas Eve and even that has become simple. I'm in charge of Pumpkin Pie and Deviled Eggs and Shrimp cocktail. I used to have the green salad assignment but, to quote them, "you put to much in it". The don't like olives or some sort of protein along with just about everything one can imagine in the basic possibilities in a green salad. It cannot be just green it needs color and variety. I guess they just got tired of picking through to take out whatever offending item they saw, so they don't ask for that anymore. It is important to know that a lot of effort is expending making the Deviled eggs, and I come close to frostbite when reaching into the store freezers to get the pie and the shrimp. One of the few perks of being older than dirt.