For you that might not be a problem for the 3/4 of a MILLION Iraqis now dead because of the Invasion it might matter. For the families of the Nearly 4000 soldiers dead and the 30 000 american wounded it might matter.
You see Simple, he had them and then he got rid of them just like the agreement demanded. That is why there aren't any to be found. Had the UN inspectors not been forced to hightail it out of Iraq because GW was about to bomb them they would have proven that.