A few months ago I installed Windows 8 on my workstation (Microsoft was offering a cheap upgrage, so being Dutch and always looking for cheap offers, I bought the upgrade). My workstation had some problems, and I did not want to set it up from scratch with Windows 7 again. It runs fine since then. It has some nice features and no issues until now.
The Microsoft offer is still valid until the end of January, so I decided to upgrade my Windows 7 notebook too, as I will use this one probably for the next 3 years (Lenovo T430s).