I didn't realise that the tradition of sending Chrismas cards was falling out of fashion. I like sending cards to people I don't see much of and like to keep in touch with.
I think one of the reasons they are falling out of fashion is because people now keep in touch with people they don't see much through the internet. When I was a kid we used to get Christmas cards full of descriptions of what happened in that family's life that year, how the kids were doing, the big changes that happened. But now you can find all that stuff out by looking at updates on Facebook, so to send out a card with that information would be kind of redundant. I'm not sure if the change is for the better or worse, but it's different.