Re: I will tell you why MS is pushing so hard for Windows 10.
"The big complaint with Windows 8 and to an extent 8.1 was simply that the UI was different from Windows 7. That complaint has been fully addressed"
No, actually, it hasn't - the difference is so profound that it blows people's minds; certainly those who just use computers, rather than play with them for fun.
What possible reason you can have for saying that, I simply won't speculate upon.