Agreed, we never ever should have set foot in Iraq and we will be paying for this mistake for years to come - but is too late to cut and run.
Will be viewed as weakness by Islam-o-fascists.
Read - Reagan and Lebanon pull out.
I don't know how many times I've heard this argument e.g. I opposed the war but now we're stuck there.. It seems to be accepted by pro and anti-war people in both parties. There is certainly a risk to withdrawal. But the risks involved in staying have become even higher. Sticking around in Iraq will not make things better. In fact, it the opposite is turning out to be the case. What can be we *realistically* accomplish by staying there?
Reagan's Lebanon pull-out is actually a good example. The alternative was to get into a nation-building morass in Beirut. The terrorist attacks really didn't start in a big way until the 1990s. If Reagan had followed Dubya's policy in Lebanon, we'd still be there now trying to encourage the Maronite Christians, Muslims, and Druze to play footsie.