I'm a sheep like most conservatives on some of the issues re: the war in Iraq, but that was not just a small part. I would say it was:
1. Saddam harboring terrorists 35%
2. His ability to threaten our interests in the region (Israel) and other civilians (Kurds) with chemical/biological weapons (and possibly trying to acquire nukes) 35%
3. Having better control of oil production (to stabilize global/US economy) 20%
4. The need to establish a democracy in the region 10%
If they would have followed my grand scheme, we would have assassinated Saddam, left a power vacuum, and let Iraq's neighbors and those inside the country fight in a battle royale to decide what country or entity will take control. While all of these other countries are occupied with Iraq, their domestic issues would have taken a back burner and you probably would have had Egypt, Yemen and Bahrain happening in 2006 instead of 2011.
I'm just saying...