I never really did. In general, I'm not a big pet/mount/special cruft kind of collector, although I'll admit I've always wanted the Great Brewfest Kodo on my Alliance characters, just because I miss kodo. They're one of my favorite mounts. But be it Love is in the Air, Hallow's Eve, the Harvest Festival, or the Lunar Festival I just don't like the in-game holidays. What ends up happening is this: a lot of people do a lot of stuff, then there's a dungeon I can run once a day for special rewards I either don't care about or won't get, and then it's over.
Now, you could point out a few things here. First off, that it's okay if I don't like the content as long as I'm not forced to do it and I'll agree with you. The content is eminently avoidable. I do like that. I like not having to do any of this stuff. I don't have to rescue reindeer or go fight the Greench, but for some reason I find the holiday events annoying and I won't even pretend I know why I find them annoying. I just admitted I can avoid them. Why, then, do they bother me so much?
And here's another weird but true fact: they annoyed me a lot less when you could chain-farm them. Ever since they put holiday bosses like Coren Direbrew, The Headless Horseman and Ahune on the dungeon finder and made them drop one special bag a day (for your first run) I've found them far, far more terrible and annoying even though it means I can run them less. I actually find myself looking back fondly on the day that I ran the Headless Horseman twenty-seven times, as everyone in our group of five switched to every max level alt they had to get another shot at the fellow.
I don't even understand that one myself. I just said I don't like the holidays, and that I like being able to utterly avoid them, and now I'm saying that I don't like that I can run them less now?