Someone once described Windows 8 as a large estate house, with many rooms and corridors. For the most part, all the rooms look great. You have the west wing (old windows) and the east wing addition (the new metro UI side). But as you wonder around the building, you on occasion stumble into a room that has no paint, the walls are ripped up, and there is an under construction sign.
Now that I think about it, maybe Windows 9 has a chance after all though. Think about it:
Windows 3.0 - bad - quite terrible
Windows 3.1 - good - worked ok
Windows 95 - bad
Windows 97 - good
Windows Me - terrible
Windows XP - very good
Windows Vista - bad, basically Win 7 Alpha
Windows 7 - good, stable and get’s out of your way
Windows 8 - bad, has no idea who it’s target market is
Windows 9 - ????
Above is just my opinions, of course, but notice the pattern. Maybe there is a hope for Windows 9 yet.