You are welcome. That Windows 8 is a perfect example of the antithesis of good User Experience. When one changes the user experience of an app, be prepare to take risk:
1. expect users to "hate" it at first but slowly getting use to it. This is the norm. It happens too for iOS (for example, from 6 to 7) and MacOS X. But how long? It takes just a few years from MacOS 9 to MacOS X, but that is because MacOS X emphasized on "better" (minimalist) user experience from the beginning. I can't say the same about Windows 8 from Windows 7: clutter, information overload, adding more steps to do the same thing, etc. It's smarter to offer a user a "cleaner" look and let user to decide (give them options) to use the Metro look, instead of vice versa.
2. expect users to "hate" it at first and ignore it for the rest of its life.
3. expect users to "force" to like it at first then slowly getting use to it. This last one is rare, mainly occurs among the die hard fans.
Both the new iOS (9) and MacOS X (11) are set to improve the current system without changing much of the user experience. iOS still have grid icons and the same clock face, MacOS still have the same dock and window elements. However, there are plenty of improvements if one just took a look, it's there on every layers, and I said before, the coding underneath. Faster, smoother, easier, smarter - that's the emphasizes. Not totally throw user out of the loop.