Hi James,
Your point, as always, is well made.
The following is a rant. It's not directed at you, I think you have a good understanding of all of these issues. It's directed at life in general.
The fact that we may have hated windows XP does not diminish our pain. Our field is medicine. A new diabetes drug, a new surgical technique, a new approach to chronic problem, are all changes we have to learn. These may take work, but they are in our field, and directly concern patient care.
Changes to Windows are not in our field. They do not improve patient care, they do not make our lives easier. At least for an old geezer like me, it takes a while to adapt to the changes in a new operating system. Usually, from my perspective, these changes are "changes for the sake of change" rather than changes to truly improve performance. So they are basically nuisances without a clear benefit.
And, at least for me personally, Windows 8 (without an aftermarket program to resurrect the start button) is a very very significant adjustment. I'm still not sure I would be able to use it, without Start8.
End of rant. Back to patients.
Gene