I'm in my early 60s. Mother and father died around 20 years ago. As executor of my father's estate, i sold the house, everything in it and at the same time all of my own personal affects that I had from a flat I earlier had in California. I arrived in '05 with a couple of suitcases. Blissfully unencumbered.
I've never understood that overt attachment to the importnace of holidays, as you've phrased it "X-mas day alone", as each and every day is special, whether living alone or with others.
I more or less adopted a fatherless family in Southern Bangladesh years ago, and go there frequently. I supported the younger boy through college and university, BBA and MBA, the older brother, I've just bought a 3-bedroom flat for he, his wife and their 2 young boys.
With that said, I've just returned from a 10-day New Years holiday with the group, 7 of us total, which was good, but sometimes a challenge for me, basically an introvert. Happy to be back home in Thailand and my solitude.
Yes, connectivity keeps our minds active and engaged in life and the living, But, close relationships living together 24/7 aren't for everyone and carry their own downsides. Connectivity is more, its the guy at the local coffee shop where you get your morning cuppa, you don't know his name, he doesn't know yours, but its a routine, ... along with the many other more casual relationships we encounter in our daily lives. That's enough.
In dues course, I'll die here in Thailand alone, and that's totally fine by me, and as is my wish.