One of the things in usability is to enable old skoop people that have been using.
Windows 7 went even further than Windows Vista into changing start menu functionality and explorer functionality that had been there since Windows 95.
So things that have been working for over a decade, suddenly stopped to work, or worse: work differently.
Would you imagine what happened when someone reordered the pedals in a car (from left to right are clutch, brake and throttle) or reassign their functionality?
So some people gathered and wrote Classic Shell.
Now someone please restrore the “backspace” keyboard behaviour back to “go one level up in the folder tree” as it had been for more than a decade…
–jeroen





