@artem
I know what you mean about Windows 8 - but I think it was more of a convergence thing than a real design decision about an effective UI for computer users. IMHO the rot set in when someone decided that what works best on a low-res 4-inch phone screen would also be the right UI styling for desktops, laptops, TVs, and every other human-computer interface under the sun. Because, you know, smartphones are really popular, and at the time Microsoft desperately wanted to be Apple (as opposed to now, when they desperately want to be Google). So it made perfect sense to remove all the visual cues which enabled people to use a point-and-click interface intuitively.
On the same basis, I look forward to bicycles with steering wheels, trains with off-road capabilities, and tinned horse-food.