The truth is, Iraq is a mess. Hundreds of thousands of people have died (although working out the toll is complicated by the fact that the invading forces have not abided by the Geneva Conventions that they are both signatories to and bothered to keep any semblence of count of the casualties).
The truth is, no WMD have been found since the invasion.
The truth is that the US and the UK (primarily) went ahead with an invasion of a soverign state
without the backing of the UN, an organisation that both countries are supposed to be members of.
The truth is that you cannot go around the world attempting to impose your own brand of lifestyle/political organisation on other nations; there are plenty of examples in history to show exactly what happens.
The truth is that years of messing an interfering in the region, by the US, the UK and others, has contributed massively to the problems that we see today. We messed in Iran. We imposed a political leader. We helped keep him in power and then we all look gobsmacked when the people finally get rid of him and actually impose an extreme form of nationalist system. Then, just as they are trying to liberalise from within the way these things should happen a certain world leader starts rattling his sabre and waffling on about "the axis of evil". And then we wonder why the Iranian people, at the next electoral opportunity, opt for a more nationalist approach.
And as for the idea that the UK or US administrations (or the leaders thereof) care about the Iraqi people:
And as I said previously, Tony Blair cared so much about the Iraqi people that he couldn't even spend the time to sign an Early Day Motion in Parliament after Saddam gassed the Kurds at Halabja in 1988.