Kinect is being targeted at people who have never used the console, because let's face it, when shown a controller with FOURTEEN buttons, who wouldn't feel a bit overwhelmed.
This is exactly why I'm so excited by it. It is a way to simplify console gaming. (which has the benefit of opening up XBOX to another market - which was the point! LOL) In my family's case, I'm just ecstatic that my Autistic daughter will have a much easier time of logging in, navigating to what she wants, and getting into the action. And as a bonus, she'll get Occupational Therapy and Physical Therapy without even realizing it!

hehehe. In all seriousness, though, I got all teary-eyed watching the demo and seeing the voice controls in action. She can DO THAT and do it without the frustration she usually feels. We have voice controls for work productivity (like talk to type). It's about time we have it for entertainment, too.

I think the accessibility aspect makes perfect sense and is what Kinect offers that is new and different from other products. (ie: Why we don't need the PS Move. It isn't going to change the way we game. Kinect will.)
I also find it interesting that people are freaking out about the lack of buttons: "OMG! But, but, but... I need buttons to shoot things!" It's not like the addition of Kinect to our consoles is going to magically evaporate our controllers. It's not a replacement. It's an 'extra' that offers us a choice in game style.