I think the reason that Christmas as lost it's appeal for a lot of people is that it as lost all of it's Magic, Everything is accessible 24/7, Supermarkets only shut for the Main day but a lot of Local shops are open even on Xmas Day, All the big retail outlets are open Boxing day so I think that's why it is harder to maintain that family feeling, Like I said when I was a youngster everything felt like it stopped for week, there was no internet or smart phones or sky tv so it literally was a case of entertaining yourself as a family unit.
Take normal everyday life now , I would love to know how many families sit down together every night and have a meal together, I bet it is a low number and I also bet even if people do still get the odd meal all at the same table , they will all be sat playing on their phones instead of interacting with each other.