If Saddam Hussein is dead, then why are we still in Iraq? we did not find any weapons of m destruction?

We removed Saddam Hussein from power instantly, Bush and Cheney said we were only going into Iraq to remove Saddam Hussein and look for weapons of m destruction which did not exist. Do Bush, Cheney, and McCain want the war to continue because they are stubborn and they refuse to admit the war was a mistake? They do not want to U.S. to come home in defeat like Vietnam? do they want the U.S. to be victorious in every single war?