I mean, I wouldn't say I feel guilty about them, but two Christmas songs that I like and that are...somewhat reviled by a lot of people as I understand it, are Wonderful Christmastime by Paul McCartney, and Merry Christmas Everyone by Shakin' Stevens.
Though with Wonderful Christmastime, it's almost always the case that I listen to it once and then that's me done for the year.
I don't have any more time for it beyond that one listen, usually. It's a strange relationship I have with that song.