My circles of friends, and my relatives, still exchange cards; but I know many have cut down because the total for the cards and stamps can be steep.
Actually the cost of an individual letter stamp for posting within the UK is very low considering it can cover any distance from the next street to the furthest of the Shetland Isles, but the total for a sizeable batch seems high, especially to those who want owt for nowt!
I still counted about 30 exchanged cards last year though, so few of my contacts have reduced the number.
I used to pick out humorous ones particularly relevant to their intended recipients, but those are the more expensive so I now go mainly for the lower-cost boxed sets.
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Last year I had one "card" from a couple I've known for many years, but in an odd digital form I found really rather hurtful.
I first thought it an unsolicited advertisement but I don't normally receive them. So then thought fraud attempt. Then I spotted their names and twigged the truth. The couple had used some tacky web-site that creates an e-post "card" by tacking a picture and generic greeting to a simple form in which the sender enters the names.
It looked cheap and worse, felt cheap - "Happy Christmas by 'Access' ".
Previously, they'd always bought cards that supported the RNLI charity, which I also support, so were doing that no longer.
I was tempted to send a terse "Merry Christmas and Happy New Year, xxxx and vvvvv, from [Arish]" e-post with an attached Winter-scene photo I'd taken; but decided I am above that - and pointedly sent a proper card from the RNLI shop.