OP, you are getting a hard time and it does read as harsh of you.
However, as a much older woman I think this is not about this Christmas, but all the past holidays where you hosted and didn't want to.
Santa comes for few enough years and I have many friends who were hugely imposed upon by family and deeply resented it.
They wanted desperately to have Christmas day on their clock, at home, not a huge palaver when their children were small, catering for and running around after various relatives, some of whom they didn't care much for.
Or having to pack up and travel for hours to stay in different beds and all that involves with small children.
Then the Santa years are gone and suddenly their is a grief for them.
Thankfully I never had this but I definitely have heard the dread of friends hosting, having to travel, get dressed up to go somewhere, when they would rather be at home.
My husband never had a Christmas in his home, the family travelled for a huge gathering in his sisters.
He hated it. Too busy, too noisy, too much.
The first Christmas of our marriage at home together was his best Christmas.
When some people give too much, resentment grows.
It can be absolutely exhausting always ensuring other people have a nice day.
Sadly women are often the ones who get caught for this, and then their own children grow up and they feel absolutely robbed of their time.
I don't know what the answer is, but I do understand.