Well, you probably have been using Windows 8 for a while now and you’ve installed many of the new Windows Store apps. But what is happening is that you are using more and more these apps to the point that it can become a bit frustrating to cycle through all of them to get to the Windows Desktop.
To make it easier to get to Desktop try using the good old Windows Key + D keyboard shortcut that no matter in which Windows 8 app you are on, you’ll always get to the desktop with one single move.
Enjoy!