Agree'd, win8 was terrible. I like Win10, it installs with an over inflated start menu that has a bunch of useless apps in it but they can all be removed so you are left with a clean and simple start menu. From what I've read if you do move to Win10 it is better to do a clean install of it as opposed to upgrading through Win7.
Slightly off topic, but : I use every day Win7 (office, for ages), Win8 (home, for 2 1/2 years) and Win10 (M$ Surface pro laptop, since I upgraded, which was stupid). Win 7 is legacy stuff and that's its only merit; I pay respects to ancestor. Win 8 is an attempt to redesign from ground up, only unsatisfactory when it hesitated from departing from the legacy stuff (example: the obnoxious, messy configuration panel of Win 7 was partly reshaped). Win 10 is a step backward, tearing every enjoyable or useful innovation away from Win 8, as if dementors had been at work.
Note : I'm a "power user" (Python & delphi development, Adobe CC incl. InDesign and Dreamweaver, Visual Studio, R, etc.) and to me, an OS is definitely not a toy.
Win 8 was a fundamental re-design. Bad market uptake is essentially a proof that habits are hard to change, no matter if good or bad, and no matter what the redesign has to offer.
Win 8 is the only version with a convenient integration of the cloud (OneDrive in that case - a feature RUINED in Win 10, and of course absent from Win 7) and good accessibility to seldom used apps.
Win 8 was the first Windows version able to restore a fully crashed PC in two hours, complete with OS, apps and user files, while on a biz trip, with zero assistance, zero backup devices (except of course the cloud), and totally unattended: it actually happened to me. While the restoration went on in my hotel room, I had dinner. And Win 8 does not crash more often than others, rather less (the only crash I experienced was due to a buggy OS auto-update).
In Win 10 you get the start menu back (so what? I'm not married with it), no placeholders for files only available in the cloud (essentially making the cloud useless, as you do not even know what it has to offer beyond your local storage), and the usual (totally outdated - Norton Commander was better anyway) file explorer that cannot conveniently be used without a mouse and spectacles if you are over 50. Duh. Plus only one stupid alphabetic list of apps, offered by the "beloved" start menu, quite inadequate if you have dozens of them - with Win 8 you had these displayed on full screen (multiple columns) and sorted according to app types or editors or recent installations, as you liked it. A much, much better overview. Duh, duh, duh. And so on.
Ok, now back to photography.