Can we leave Iraq?

The wars in Iraq, Afghanistan, and Colombia represent the largest make-work program in our nation's history, on a par with FDR's much maligned WPA. If we were to bring our troops home today, there would not be jobs for them. Still, as this make-work program is co$ting our nation trillions, wouldn't it make more sense to bring the troops home and put them to work rebuilding decayed water lines, pot-holed roads, and essential mass transit?