RE: Windows 8 on the desktop...
I have to admit folks with t-rex arms will have a problem with a touchscreen monitor. I can't say they will ever "adapt" to the screen so they'll stay behind on Windows 7. On the bright side, those lacking sufficient musculature in their arms might over time build enough strength and stamina to maintain and actually enjoy the touchscreen features. And maybe even be cured of that carpal tunnel they've developed due to the mouse so their children will not be born with dainty wrists.