...because of mods. However, I finally got to try out a bunch of Oblivion mods at a buddy's house, and to be honest, it was a giant mess. There were some cool ideas, but none, and I mean none of them worked the way they were supposed to. On top of that, many caused glitches and bugs that made the game so unstable you would think it was coded by a high school computer class.
Since then I looked to see what is available for Skyrim, and although exploding chickens would be humorous for a couple minutes, I haven't found anything worth building my new PC for just to play Skyrim. What is your opinion on mods? Are they more hassle than they are worth?