I'm surprised so many are urging to stay with Vista. I would take the 'quirks' of 8 over Vista any day!
Unfortunately, for many the 'quirks' of 8 are more than just 'quirks'. When a 'quirk' makes an OS virtually unusable unless you use a touchscreen then it's something rather more serious.
Windows 8 has become a disaster for Microsoft. Vista was its previous attempt at disaster but even that is 100 times better than Windows 8. I did consider upgrading (the term 'upgrading to Windows 8' is a bit of an oxymoron) the laptop so I could do some development work. Microsoft insist you use Windows 8 when you want to develop Windows Phone 8 apps. However, I've reluctantly decided to ditch the Windows Phone platform altogether, rather than put Windows 8 on my laptop.
The news over Windows 8.1 isn't encouraging. Although there are rumours that the Start menu will return, Microsoft themselves have been putting out counter-suggestions that it won't.
It's not all doom'n'gloom. There are Windows 8 applications which will put the Start menu back and allow you to boot straight to the desktop. 'Start Menu 8' is a very good free one. My sister and her husband have added it to their Windows 8 laptop and it's made the world of difference for them.
The metro interface on a non-touchscreen device? An utterly stupid idea.
Actually, I don't really get the whole 'Vista was a disaster' thing. Vista's only real problem was that it was bloated and a resource hog. On today's PCs it would run absolutely fine but it was perhaps a little top heavy for the machines of 5-6 years ago. Windows 7, which has received a much better reception, is essentially Vista ... but leaner. Otherwise, Vista is perfectly fine.