I agree, MS. I won't be sending the cheap bastard one, but I'm sure someone will take pity on him.
(Just kidding, Kevy! I do agree though- I send cards to people all the time without expecting reciprocity. I also get cards and for whatever reason I might not send back one, but I hope that the author is like me and doesn't have expectations. Real life and the busy-ness of the holidays kind of gets in the way of things sometimes.)