Some people I know I will never get a card back from (like my granfather) yet I will always send him one. But I am getting just a little annoyed at how few people send cards. Each year I get less and less. Next year I am going to cut my list down to about half. Those who I know are "into" Christmas cards, either by the fact that they acknowledge the card, or send one in return, will get one. Many people don't even care, so I am not going to waste my time and energy.
(After sending out 40 cards and getting 8 back so far, I am feeling just a wee bit jaded)