For the past several years now I have stopped sending physical Christmas cards and instead I simply send email greetings to those for whom I have an email address. This is a whole lot quicker and easier than the whole process of choosing and purchasing cards or making them oneself, addressing the envelopes either by hand or with computer-generated labels printed out, writing a personal note or simply signing one's name on the card, affixing stamps to the envelopes and then trotting the whole stack over to the post office for mailing.....
True, this means that the recipient won't have a pretty or interesting card to display on the mantel or in a cherished Christmas bowl, and if this has been the only means of keeping in touch, without that annual Christmas card tradition changes of address and family situations may never be shared and learned. If someone doesn't have an email address or it is unknown to those who have been sending them cards each year, a personal connection is then lost, which can be unfortunate. In today's era of Facebook and Twitter, though, this loss of contact is less likely to happen but among the elderly there are still going to be those who do not use a computer because they choose not to do so or because they are physically unable to do so due to health issues of one sort or another.
It is ironic, though, that now, when I am retired and have all the time in the world to do special projects such as creating my own Christmas cards and/or purchasing, writing and sending out commercial ones, that I don't do it any more!