Maybe Skyward Sword alone isn't worth buying a Wii, but if you don't have Twilight Princess or Brawl, I'd get the Wii to get any combination of those games. It also lets you play Gamecube games, so if you have a Gamecube, you can trade it in for a discount. Do remember to hang onto your memory card, games that you regularly play and controllers, all of which are obviously required to play NGC games on the Wii. Honestly, I'd say that TP is more worthy of a system that can play it than SS is, but that's just me. Besides, TP can be played on the Gamecube, if that's a resource available to you.