I've been using Win8 evaluation version for 29 days according the amount of time I have left for evaluation.
At first I had to force myself to use Win8 over Win7, but now I've got used to Win8 I don't have a problem with it, in fact I like its functionality.
I don't use Metro much (just a couple of apps) but the familiar desktop is just one click away, where I have all my apps sorted into folders for easy access from the desktop. I used this method on Win7 anyway (see pic below of my Win8 desktop).
To restart the PC is still 3 clicks, just like Win7, to shutdown the PC is one extra click over Win7, which is hardly a big task.
Under the bonnet, Win8 is faster, and I will purchase at least one copy of Win8 Professional when it becomes available.
Personally, I don't care what anyone else thinks about Win8, only how I feel about it, as it's me who will be using it.
Everyone else can use what they want, that's their choice.