Hard to pick a specific Christmas or moment, but I just miss Christmas as a kid overall. There was just something so magical about it from the early anticipation leading up to it, and the day itself. We had our traditions such as going to Christmas eve service, and going home to wait until midnight to open stockings. I also remember my grandpa recording us open our gifts with the VHS camcorder. I also remember the church Christmas pageant, as much as I was not that crazy about the whole thing of having to memorize my lines and stuff, looking back it was still a fun thing to get us in the spirit as kids. I remember they used to give us a big candy basket at the end, and it was always a fun feeling knowing the performance was done. Overall the memories of Christmas as a kid are memorable and simply can't be recreated.
That is perhaps my only regret of not having children, is not being able to recreate those types of memories and passing them on.
Not to say Christmas as an adult is not great anymore, it's just that it's not the same. I find it also comes and goes so fast now. I still always look forward to it though, it's great to spend time with all the family like my grandparents, and now that my nephews are older they're not all in town anymore so it's great to have them all together as well. Just having all the family together is great. I also started a new tradition where I have a gathering at my house on Boxing Day too, so it's kind of like an extension of Christmas day. Sometimes old traditions just end, but just need to start new ones.
I look forward to a point that my off grid cabin is done, as it would be awesome to do Christmas there. My grandparents are getting older and I really hope I can have something there before they're gone or simply too old to want to go there in winter. They are the ones that introduced me to camping and the outdoors when I was a little kid so it would be cool for them to see my place at least semi completed and livable. I may potentially do something like Christmas in July there though, as getting to it in winter is a bit sketchy and is very dependent on the amount of snow on the ground. But actually being there in winter would be so magical.