I like Windows 7 just fine and don't see how Win8 improves upon it in any way.
I think this may be one of the largest problems for people making the switch. After moving to Win8, a friend of mine enjoyed everything about the new OS except for one "missing" feature from Windows 7. He couldn't hit the windows key and type in the search box in the start menu to find programs he was looking for. After I told him you could still do exactly this, I realized that there is nothing on the start screen that really indicates that you are automatically search focused (people are used to a search box that they can focus on). Now that he knows about this he has no qualms, but I guess there are some undiscoverable features that some of us have taken for granted in win8 because we've actually read up on how to be a power user.