Altruistic? Come on, man. You can do better than this. When have the iraqis fucked with us? Never. We supported their shit, in fact. There wasn't one fucking good intention in the entire bunch. There are a handful of countries infinitely worse than Iraq. Why did we go into Iraq in the first place? I don't know. Oil? I doubt it. I don't see us bathing in black gold. A pretty good theory I've heard is just the fact that a superpower like America just has to slap around a little country every once in a while. Perhaps it was just to stimulate economic growth; America's economy (sans recent events) is pretty much en fuego right now, anyways.
Plain and simple, there weren't any good intentions. We didn't want to instill democracy and all that bullshit, nor remove Saddam from power, nor rid them of nuclear weapons. It was clear that we were gonna do whatever the fuck we wanted to do. Is Iraq better off without Saddam? I dunno. They don't have an autocratic authoritarian as a leader, but the entire region is getting assraped by the specter of civil war and political, social, and military instability, not to mention insurgency.