Just installed it as a virtual machine on my iMac. It's not really useless if you have a mouse. There is a desktop mode that has the feel of previous Windows versions. So far its running pretty smoothly.
The thing about your post is that I've been contemplating switching to the Mac side of the aisle. I'm in no rush, but even though I had to switch to MS-DOS from TRS-DOS almost 30 years ago, I really don't see the point of a Microsoft based computing environment in the era of the tablet.
Right now I am perfectly happy with Windows 7, but assuming I'm not dead or senile in 2015 I can't figure out what I'll be doing on a Windows 9 or 10 desktop. I've lost interest in tweaking or working around the operating system - it just seems a waste of the little time I have left. And that seems to be the reality of a Windows OS. Much like XP, I've finally gotten Win 7 to mostly do what I expect from a desktop OS.
I love my iPad 1. The one thing I don't like is the smudges from fingers and my lack of accuracy in touching exactly what I'm aiming at to drag, etc. So why not screw up the mouse-keyboard environment of my desktop so that thousands of software (ok, now they're "app") manufacturers can make their clunky but fully functional data base oriented programs work in a mouseless workplace.
If I must basically move to an iPad computing environment, it seems like I might as well go with the folks who made the touchscreen GUI a commercial success. And I guess if I need something that works well only in Win 7, there seems to be that option in the Mac environment.
That's my rant for the month, posted from my iPad.