As I wrote in a previous thread, FarmVille made me an achievement whore, its achievements on their turn helped making me a FV addict. But now, the excess, with a corollary of nasty communication problems and FBK excessive traffic and homepage crowding they helped causing, is starting making me hate them and FV itself too. Still addict, but addiction is creaking.
Edit: I'm still totally addicted to do every possible sidequest in the RPG's I like, though, and I find them far more enjoyable achievements (in a wider meaning).