On the start screen, you right click every metro app (about 10 apps or so by default), and click the uninstall button in the lower left corner. Done. This is not heavy modding or editing. It's like deleting shortcuts from the desktop. 5 seconds of work. Literally.
The Metro part in W8 is a disaster, but the desktop part is fantastic (although ugly and inconsistent). Technically it's better than Win7 in every way. You can uninstall every single metro app and use only desktop, if you want (that's what I did).