Leroux: Is there any reasonable explanation for this huge difference in judgement, apart from Win 8 being a shock for all at first? What does Win 10 do so much better than Win 8?
I felt the Windows 8 "fullscreen tablet interface" and start menu was awful, and with Windows 10, Microsoft seriously backpedaled, bringing the Windows desktop once again to the front, at least for the time being. As if Windows 10 was Microsoft's way of saying "Ok we are sorry, we screwed up seriously with the Windows 8/8.1 user interface, trying to make all our desktop users ===> tablet users right away.".
That alone made me like Windows 10 much more than Windows 8/8.1. At the same time though, Windows 10 user interface felt and still feels messy and incoherent, as if it can't decide whether it wants to use the old legacy, or new, user interface. Many things are in both, gah...
Anyway, I felt Windows 10 user interface is still easier to use for a desktop user with a mouse and a keyboard, than the 8/8.1 interface.
Microsoft was not alone, I think Ubuntu (Linux) also introduced some silly user interface back then that seemed to be more suitable for touchscreen tablets than desktop PCs and laptops. That was the point when I started seeking for an alternative to Ubuntu, and ended up with Linux Mint (XFCE), using it in home use ever since. It felt some companies suddenly felt that the future is solely in the touchscreen tablets and phones, and desktop users are a dying breed. (Microsoft went even to proclaim that in the "near future" (ie. about now), home users will not use physical keyboards or mouse at all, but do 99% of their computing stuff on touchscreen devices. Only programmers and such need keyboards and a mouse, yeah...).