It seems like most of the arguments being put forward have a hard time thinking about the reasons why the United States invaded Iraq. People seem to think it was just a "mistake" and tend to chalk it up to George Bush incompetence, and/or making the defense industry rich, etc.
Haven't any of you played Civilization?
If you're running a country, and then there's this other little pest of a country that has a track record of attacking people, is technologically inferior, AND is sitting on a nice resource such as oil, wouldn't you want to invade it and make your country stronger (even if you knew there was a chance of some of your military units dying in the process)?
People play games such as Civilization and don't realize that this stuff happens in the real world too.
Things equal to nothing else are equal to each other.