It sounds a very Gradgrind notion. Never do anything just for the pleasure, make sure that every penny goes to some useful purpose.
I have just had a birthday, I loved receiving cards from people who cared enough about me acknowledge the day. They stand somewhere prominent in the living room, which I see constantly when I am sitting there and passing through it.
Quite a number of them are humorous and each has been chosen to specifically apeal to my sense of humour, showing that the person who sent them knows me well.
The cards have given me so much pleasure over the last fortnight that it is a shame that they are about to come down to make space for DH's cards, whose birthday is imminent.
I really do not think an email card is in anyway comparable or a replacement for a physical card. You only see it if you sit down at a computer and dial it up. There are few cards to chose from so that if two people send you ecards the chances are quite high that they will be identical. As for trying to appreciate it when on the screen on a phone, hopeless.