Ufff... Microsoft sofware makes me feel sick.
It's been seven years since I last had a Windows computer, and I will NEVER go back to that world of bloat, virusses, malware, registry nightmares, slowness, fragmentation and uglyness.
Linux covers my daily needs: it runs on my Pandaboard ES silent fanless computer wich boots in seconds with it's TI kernel. It's free, fast, light and secure. If I'd still be using Windows **** after all those years I'd feel pretty idiotic.
Other OSes I use are Amiga OS (on minimg, fpga-arcade) and Risc OS (on the Pandaboard ES, too).
WHY on earth would anybody use Microsft Windows these days? No, seriously: Lubuntu is SO easy that even my parents use it every day and I didn't have to teach them a single thing! Using M$ **** is nonsense.
The only Micro-**** software I run is...well, MSX-DOS on my Altera DE1 home-made MSX2+ computer 
And it'll remain like that.
If I only had M$ Windows to choose from, I'm sure I'd leave computers for good.
Someone here clearly thinks API/ABI alzheimers and dependency hell is ALL THAT...
I personally don't give a damn about OSs anymore because they all are designed according to a vision within which there are no users, but prisoners (and I'm not referring to security). I happen to run Windows because it accompanies the damn PC I buy and because it's less of a discomfort than anything else "usable" !
EDIT:
And, I'm not planning to use W8, for
apparent reasons.
EDIT 2:
(replaced "schizophrenia" by "alzheimers")