I use Windows 8 (well Server 2012) on a 27" touchscreen at work every weekday. I use the screen instead of the mouse for about 50% of my tasks. I'd never go back to a setup without a touchscreen at work, because the productivity boost is incredible. You're not using Windows 8 on the right hardware if you didn't see a marked productivity boost, but when that hardware costs a couple thousand dollars, it's easy to understand why most people haven't really tried it and won't for at least another year or two.
At home, my PC isn't used for productivity, so I'm still on Windows 7. I don't have the hardware to make any use of Windows 8 here.
Windows 8 is all about the hardware, but hardly anyone has it. Microsoft did an absolutely terrible job of getting OEMs on board with producing hardware for it. They should have flat-out told OEMs they couldn't sell Win8 on any machine without touch, and then discontinued 7 as planned to force the OEMs to build touch from the ground-up or use another OS like Chrome.
Sorry but you're using it wrong. Server 2012 is much better being Core/Powershell OS. Any one that uses a Server 2012 with GUI is a noob. MS says to use Core no GUI installs on servers these days. So You essentially wasted companies money on a 27" touchscreen. You must work at a Bank or for the .gov.
You are using it wrong Core is much superior to GUI. I can do things 100X faster on core then GUI. Command shell is far superior to touch or any GUI.