Not quite.

The death, destruction, and misery of war are certainly grounds for general opposition to war, but a self-destructive pacifism makes no sense. The question before was whether Saddam was a probable threat to the USA, and I personally wasn't convinced. However, I also understood the possibility that there might be grounds for war too sensitive to disclose. (Still wondering about that.)

Next point - is the US doing badly? Compared to what? I personally didn't think this war would be anything but bloody and vicious; that fact that it's proved to be just that doesn't tell me we're doing badly given that we're at war and our opponent is known for his ferocity.

Why do I think it's a good idea to keep going? Because if we retreat, I'm convinced that Saddam, Al Qaeda and others like them, not just arabs, btw - will escalate aggressions.

For all its warts, the USA is a pretty great place. Probably worth preserving and building... IMHO.