Then why push Metro on me?
It's like MS added a second door to the front hallway of my house. "Sure, you can still get to your living room; just open the second door too! That second door doesn't benefit you in any way, but some of the guys with different floor plans needed one so you have to have one too."
We know the capability is there to disable Metro; the registry shortcut was common knowledge ten minutes after the Developer release rolled out. Put the option back in and prompt for it at install.
Microsoft's fear is that so many people will disable Metro on desktops that developers will abandon it, the lack of apps will cause the MS Store and Surface RT to crash and burn, and the rejection of W8 and MS-brand hardware will drag everything else down with them. They've wagered their desktop dominance on the demand for cross-platform applications.