Attacking Iraq has to do with him violating a ceasefire agreement he made in 1991. He invaded Kuwait, had their women raped, their men murdered, and attempted to overtake their oil fields. Hussein used biological weapons on his own people. He has repeatedly had his military lock their SAMs onto our planes. He has fired missiles into Israel. He has repeatedly attempted to acquire the materials needed for a nuclear weapon. Need I go on?
Funny that the administration isn't singing the same tune you are. They seem to think that the things you've mentioned aren't sufficient justification. Oh, and you missed one. You were supposed to throw that part in about how they dumped babies out of incubators and hauled them back to Baghdad.