The laptop I use is my employers, and I'm not allowed to upgrade. And since the company is still in the transition from XP to Windows 7 I don't expect it to have Windows 8 ever.
My Windows 7 desktop doesn't have a touchscreen (neither has that laptop, by the way), and for all I read a touch screen really is necessary to enjoy Windows 8. Moreover, moving my hand from mouse to keyboard and vice versa is a one foot horizontal movement, while moving it to the screen is a one to two feet vertical movement (with the upper part of the screen located far above my shoulder height), which is clumsy and probably leads to a quite new variant of RSI in the shoulder. No thanks.
I expect this desktop to stay functional like this till far in the Windows 9 era, maybe even until Windows 10 arrives.
My XP desktop is not used much and works fine. SInce there never was a need to upgrade it to Windows 7, there surely isn't a need to upgrade it to Windows 8.
Smartphones and tablets can't be upgraded. If I buy one, I'll have to choose between Apple, Google or Microsoft software. Not relevant at the moment.
windows 8 arrives,
will you upgrade your operation system?