Just like that; pick up and walk out leaving the country to fend for itself. That statement should outrage every American that is loyal to his or her country.
Did that argument time travel from 2003?
Since Ron Paul is the candidate that gets more donations from active duty military than any of the others, then you should start with them if you are going to call anyone's loyalty into question.
We should pick up and leave now, because that is what we're going to do in the end anyway when the recession deepens, when the unfunded healthcare and social security liabilities come due, when soldiers start coming to find their houses repossessed, when the dollar collapses completely, and when Iraq splinters into various small states and provinces.
It is hard to argue this with baby-boomers, because they grew up during the Cold War and that is the blueprint of the world that they know. As much as everyone would love to dig up Hitler and defeat him all over again to get a nationally unifying warm fuzzy, the world has changed. Primarily, we have entered the era of 4th generation warfare.
4th generation war is neither a Cold War nor completely a hot war. It is waged in low intensity conflicts by non-state forces that highly centralized state militaries cannot ever completely overcome. There is no flag to capture; there is no commanding general to surrender. They can't beat you, but you can't beat them. You just bleed until you're exhausted.
I figure it will take at least another generation before this is finally realized.