Oh, and having to send out a Christmas card to the one guy who actually cares. We see you once a year, man. It's nice of you to send a card, but we're not card people. Now, because of you, we either have to go out and buy a single card for way more than it's worth, or buy an assortment pack and try to keep track of which ones you've already gotten. And by the way, why do card companies not make assortment packs with one of each card? They make 16 different styles, why not put all 16 in one box?
I guess now I feel bad for sending people Christmas cards 
Should I not send cards to people in case one of them might not be a "card person" and then they have to go buy a card to send to me? I keep track of who sends me cards, and if I send a card to a person who doesn't send one back, they don't get one in later years. Why not just not send him a card back and then he probably won't send you any more? You risk hurting his feelings but someone's going to be unhappy in either scenario, really.
Oh, I send him the card, and appreciate that he thinks of us, and I wouldn't suggest not sending cards to people. It frustrates me because he's quite vocal about the fact that he'll be really offended if he doesn't get a card. The card isn't the frustrating part, so much as the expectation that OF COURSE we'll send a card, we HAVE to send a card, and the fact that he thinks it's appropriate to tell us this. From a guy we see once a year

We do send cards to one or two other people when we remember, but they all understand that I'm just not a card person (too forgetful), I'd rather just give them a call or send an email or something, and they don't really CARE beyond being vaguely pleased to get one.
Which reminds me, I still have to send that card.