Why do you choose Windows ?
This isn't intended to start some kind of flame war, it's just a genuine question, what is it about Windows that makes it your OS of choice ?
I personally have moved over to a Mac and OS X but I'm also a big fan of Windows 8 so I'm open to both platforms.
For me, I find Windows has a larger range of software (OS X is catching up but the fact still remains) and Office is better and more up to date on Windows. I run Windows 8.1 in a virtual machine on my Mac and I'm also considering Boot Camping so I don't lose any performance, even though I do also love OS X.
Anyway, what are your reasons ?