I believe WMDs were a legitimate selling point.
The issue was not our being attacked by Iraq. The issue always was the Iraq/terrorist connection and getting transportable quantities (small) of WMDs in the hands of those terrorists for attacks on Americans, American allies, and American interests.
I will always believe WMDs were a threat. My question is "where did they go?"
The WMD, although a legitimate argument for going to war with Iraq, wasn't the only or even primary reason if I recall correctly.
The President's primary reason as stated at the time was that we would not just go after the perpetrators of 9/11, but we would go after terrorists everywhere, and those who harbored or supported them.Iraq was an obvious target.
IIRC,WMD was the lead argument by Powell at the U.N. because it was thought the best way to get a resolution.
In hindsight it was a waste of time because it bought Saddam time to unload alot of bad stuff.