I go through the ritual, but only because it's generally done. But awkward situations sometimes come up. Should I send a Christmas or birthday card this year to my lately ex-sister-in-law? At what point should a Christmas card to my brother also be addressed to his new partner?
We did get one christmas card last year that said that they would not be sending cards this year, but would be making a donation to a charity (I think it was for MS) instead. Sounds good to me! We did that in work too - everyone gave a couple of pounds and we gave it all to a charity instead of giving out cards.
Why do people have to know one is donating to charity except to inform them what a Wonderful Person one is? Why not send cards as usual and donate to charity? Or send "charity" cards? I normally send cards to people I don't see very often; it just means you've remembered them and value them. Some, but not all, of a group of pub mates have taken to sending (i.e. dishing out in the pub) Christmas cards to each other, which I think is barmy. I don't do it and it's done me no harm whatever.