There is literally no rational reason to support the Iraq War.
Over throwing Arab Hitler is not one?
Nope. I honestly couldn't care less if the people of Iraq are free or not. It wasn't our problem to begin with, and the people would have given Saddam the Qaddaffi treatment (albeit after a brutal response that, as Ernest noted, makes the Syrian and Libyan responses to the Arab Spring look like childs play) by 2013ish anyway.
Also, are you willing to join the military? Are you willing to go over there and fight? Almost every hawk I have ever met has never served our nation.