I beta tested win 8 for several months. Never did get trainz to run on it nor minecraft or a host of other games either. I did not like win 8 then and I wont be buying it now that it has gone retail.
I think that both Apple and MS feel that the days of the PC as we know it today are going fast, and that is why MS took the jump and designed Windows 8. The new Surface they just introduced is getting rave reviews from people that actually have tried one, and while it doesn't have many of the features of a PC, for many users it has everything they need on a daily basis. Emails, popular apps, web browsing, etc. is all many people do. I think business, some of which still are using XP, will eventually adopt Windows 7 as their gold standard, and will use it for many, many years. I don't think you will see major businesses adopting Windows 8, either RT or Pro, in any way.
Me , having moved from XP to Windows 7, since the beginning of the year, love the stability of Windows 7, it does everything I need, and doesn't ever crash. Can't beat that. If it ain't broke, don't fix it.