War is often necessary and beneficial. Like if the US had decided to dethrone Saddam Hussein, that would have been a good war. If only they'd done that. But instead, they mislead, lied, and declared victory on a goal that they hadn't set out to achieve (publicly).
And incidentally, supporting war as being necessary isn't the same as saying that I like it.
And yes, a lot of money was spent on the war, but look at all the oil and land that was captured. I'd bet that the war in Iraq will pay for itself.
How can you say, "Who in their right mind is ok with war" while at the same time support nuking the entire middle-east? That would result in A LOT more death and suffering than any war has.