re: 4000 Americans dead, well over 30,000 Americans wounded, a total cost of ~3000 billion dollars....
An important piece of information to remember here is that the vast majority of Iraqis being killed are being killed by those we're fighting.
Pay attention to who's doing the attacking, and who the targets are.
The less intelligent in our country have been led to believe over the past year or so that "U.S. out of Iraq" and "End the War" are equivalent statements. They're not.