I've been itching for a CCG experience without the associated hassles (for me: buying useless cards, blind packs, the investment, and the need to trade), and picked up W:I on that basis. A couple of plays got my whole gaming group into it, and now we're buying packs, building decks, and having a blast.
I realize that coming to the official forums for a game to say "I love this game!" might be redundant, but in my lurking I've seen a lot of grumbling about the state of the game, formal petitions, etc. Nothing against grumbling, but I thought a counterpoint from an enthusiastic new player might be welcome. W:I has become one of my favorite games, and I think it's brilliantly constructed.
My goal is to become good enough at W:I to compete in Worlds at GenCon 2012, and I expect that to be a fun journey.