I have not been alone on Christmas Day but I have been alone on Christmas Eve often.
I have friends who volunteer at various missions and shelters to serve Christmas meals to others. Then one is not alone and truly celebrating the Christian gift of giving and serving others.
I had the unique opportunity (and by that I mean not many others will have the chance) to spend Christmas Eve into Christmas Day at an animal rescue, by request. The sun was long down, and I was buttoning-up the barn for the night. All the animals (mostly horses) were where they needed to be. The ones that needed to be out were out. The ones that needed to be in were in. Everyone's fed. I change the radio to classical (because the animals liked it--what's up with people thinking that horses like country music?) and turned off the lights.
Just then, WFMT in Chicago started playing some tenor singing, "Oh Holy Night." I had beer waiting for me at the farmhouse. I was the only human for acres all around. I just sat down and cried. It was one of the most moving experiences in my life. The music, and the sound of the animals settling in for the night.
I will never forget. And I'm just a guy who people ask, "how come you never got married?" I just reply, "because."