I disagree. The switchers I know have often been frustrated by the UX, and haven't seemed to care very much about the aesthetics. But they really care about things (finally!) just working. This is overwhelmingly achieved by QA.

Hmm, I guess that's not my experience as a switcher (less things work correctly than did in Win 7), but we can agree to disagree.

Agreed. My uncle used to have an old g3 macbook, and a Windows notebook. A year ago, he dropped both for a Macbook (when they dropped the price to €999, not the unibody one) with OS X Leopard, because he had this "notion" that the Macs just "works", and are "virus proof".

You had to see his face when the OS would hang when he performed an update, or the wireless connection problems.