Well, aside from my belief (and the belief of most of the sane world) there were WMD's, prior to invasion, there were a mul ude of reasons given for invading Iraq. From continued resistance to and defiance of over a dozen UNSC resolutions, to human rights abuses verging on genocide, to attempted assassination of a sitting president, to frequent and blatant violations of the 1991 cease-fire agreement, to inflammatory rhetoric (to the effect of using WMD's on our troops), and on and on and on...
That you can't seem to be able to avert your attention from the mainstream media's perception of the war is telling.