A lot of what you wrote is not true. Yellow cake, not true. WMD’s, not true. Saddam did not attack us at any time. The hijackers were Saudi nationals, why didn’t we attack them? The tearing down of Saddams statue was a US inspired event. In the US, people tore down statues of our heroes, and put on plays mocking and ridiculing GW and Trump. I know that is slightly off subject, but in any country you can find a minority who hates the ruler, and will tear down statues if possible. It meant nothing, Iraq is unchanged from pre-911 at its core.
WMD wasn't the only reason. And there was plenty of evidence.
NBC: Secret U.S. mission hauls uranium from Iraq
Saddam Rewards Suicide Bombers' Families
Remember the whole Valerie Plame outing scandal. At the heart of that was Iraq's attempts to buy yellow cake Uranium.
I remember TV coverage of Saddam paying suicide bombers families long before we invaded. Saddam was constantly bragging about his nuclear mujadiheen.