Meh, it wasn't so clearcut. You have to remember that Hussein himself deliberately encouraged the belief that he had chemical weapons (perhaps thinking it would be a deterrent) and that he did, in fact, use chemical weapons against the Kurds in previous years.

The information was bad, but it certainly wasn't clear to an 8 year old and probably wasn't even clear to Bush & Co. Given the incredible effort that the US military spent trying to hunt down WMDs after the war, it's clear the belief was genuine. That doesn't make their decisions good, but it makes them somewhat understandable.

I was 30 when the Iraq war started. I had mixed feelings then and to be honest, I still have mixed feelings. I cry not one single tear for Saddam Hussein, though the population of Iraq deserved a better outcome.