The war was right, but spare a thought for the international world order that is now in shambles because of it. The intentions were noble, but consider the license it gives to less benevolent states who can now point to precedent to launch an attack based on their own, classified intelligence.
The uproar over WMDs is because the proof of their existence now will retroactively rally the universal support the US, UK and Australia should have gotten before entering the conflict, making the war a legitimate, legal affair in accordance with the world order we once enjoyed. The absence of WMDs gives the thumbs-up to every nation considering a pre-emptive strike "justified" by whatever excuse they care to dream up.
I believe the war was justified. But I still don't support it because the world is not ready to face the consequences of the new world order that is a free-for-all for each and every nation. The horrors of Saddam's regime pale in comparison to an international arena with our new rules - I'm sorry for all the innocents sacrificed (pre and post-war) just for a world where billions more now are unprotected.