One thing I didn't realise until recently was how awful Saddam Hussein actually was. I was too young to know about the horrific Iran-Iraq War, which lasted 8 years, and in which Iraq heavily used chemical weapons (WMDs) on not just military but civilian targets. It was also not the only war of aggression waged in the Middle East by Iraq either. There is no doubt in my mind that he was a tyrant.
If you are hearing intelligence reports, in whose integrity you trusted, that Iraq were planning to reactivate their weapons development programme, or had even already done so, and in the context of the two bloody conflicts Hussein had already initiated in the region, what would you do? I would not want to be in the position to make that decision.
As the memos in the report say, regime change was the "real prize" of the Iraq War. However, I think destabilising country, the displacement of millions, and the death of hundreds of thousands is a heavy heavy price to pay for that change. Rushing into conflict, as the report concludes the government did, was the biggest mistake they made.