In Search of Everything All at Once

This sort of dialog box is either a textbook example of Microsoft's arrogance, or a display of its poor design choices:

This pops up after you've used Vista a bit. Now, let's say you don't want to join the program. You'll notice the "OK" button is grayed out. It only lets you click on it once you pick Join the Windows Customer Experience Improvement Program and then make your selection. In my case, I chose I don't want to join the program at this time.

Why in the world would they make it to where you cannot choose "no" without jumping through hoops? Is it arrogance on their part, assuming anyone would want to say yes? Or is it just bad design. Or both?

Either way, whatever you choose, you still have to confirm with the UAC prompt that pops up afterwards.