depends what you do.
if you do media consumption, books, Netflix, magazines, news or anything along those lines, then metro apps are night and day above the desktop experience.
other than that there's lots of little stuff like. MS account which saves most of your settings, refresh/restart which is great, fast boot and many many other things.
if you have it stick win8 on, if you don't, nothing wrong with w7.
Though you probably get used to the new interface, I found it to be inconsistent. Sometimes throwing me into Metro, sometimes the desktop interface.
comments like this are not helpful. its obvious which is desktop stuff and which is metro stuff, its also an instant switch, so it doesn't matter if you go between the two , I do.
Gaming, web browsing, office - desktop
all other media consumption - metro
its is not purely touch based either. even with K+M for media consumption is absolutely miles ahead in metro. neither of my devices are touch screen and there's no way in hell I would move back.
desktop works like win7, metro experience for certain tasks is so far ahead.