Windows 8 lifts Microsoft's profit 19%http://money.cnn.com/2013/04/18/technology/enterprise/microsoft-earnings/index.html
Yep so all the doom and gloom about decline in PC sales and end of the PC era. Windows 8 sales are doing well proving more people are upgrading their existing systems as opposed to purchasing new computers.
Personally for me I have upgraded my 6 year old PC to Windows 8 and it runs very smoothly. Amazing how efficient MS have made the OS.