Greetings cards; are they a lost art?

I figure I am doing my part to keep Canada Post in business. I still habitually send out 2-3doz cards - each with a personalized note or letter. I only got 2 cards last Christmas 2014. It crushes me.

Worse than not getting a card at all is when someone sends out block emails; especially those with some link to a cute interractive website. Sure, send me the link but how is this a greeting? How is this making an effort to acknowledge a friendship or kinship?