Tom H - my B-i-L is an IT guru and he calls Windows 8 - Windows Hate, LOL.
I'm up to Windows 7 at the salt mine and at home my XP laptop went south and with Microsoft dropping support for it, I decided to make a change vs fix it.
My Wife and I have iPhones and really like them and the simplicity of them. So on the home front, I'm moving away from Windows and towards Apple. I recently bought an iPad Mini Retina and it is one awesome device. My next purchase is going to be a Mac Mini - which is an Apple CPU and you can take your old monitors, mouse and printers (via USB) and use them with the Mac - saving some $$$'s.
You know I've got my Wife and three kids, the youngest just turned 13. As you can understand it is a very busy time around our house with all the activities associated with a family like ours - Church, family, sports, and Scouting, you name it.
Back in the day, I could build a PC, set the dip switches, write some macros - pretty much do whatever I needed or was required to make a PC work - but now, I want a PC to be like the washer. Throw the clothes in it, add the detergent, close the lid, turn the dial to colors and push the ON button and forget it. For me, the apple solution so far is getting it done and it's very easy - almost majic.
Back to your original question - my guess is there is much merit in Windows 8 and once everyone learns it and becomes accustomed to it, they won't want to go back to an older operating system. I know at the salt mine about 5 years ago, we moved from a nice MRP system to SAP and EVERYONE hated it, but now, no big deal and it is a much more powerful system than we had. My guess is at some point Windows 8 or it's successor will be the same.
Good luck with your new PC!!!!!!!!!!!