Otto-
I understand your viewpoint, but I disagree. As I recall, President Bush made clear that the main reason for going to war was about WMD. Even if the real main reason was to make a point to the terrorists, the truth was not told.
In my opinion, the war in Afghanistan was the real 'payback' for the 9/11 attacks. The message did get across, but terrorism is still a threat in Sotheast Asia and Europe among others, but especially Southwest Asia. Iraq had little (if any) affiliation with terrorists, in fact, Saddam Hussein despised them. Meanwhile terrorism is an almost regular occurance in Saudi Arabia.
Offhand question- Why did you say that we needed to invade a country with oil? How would it make a difference?