To the people who said they'd rather stick with computers, thats fine, yet, you don't need to update a console, yet you know its going to perform on all games that come out for it.
In this case, with the XBOX 360, you are also getting a top system for the price of a very low spec PC. Yes, you can't install programs on it, etc, yet the games will run fantastically, and will look great.
I also prefer to sit the living room on the couch, with a drink, and play games on the big screen. It just seems to make more sense. Though I'm a PC gamer of course too, but I def play consoles more...