Wait, what? Saddam wasn't a very nice guy, but it's not like he was a big source of instability in the region. If anything, he provided a balance of power between Iraq and Iran. Now, with him gone, the whole region will probably be soon at the mercy of Iran, who can actually become a real threat to the US, if it really wants to.
Oh, and people are wondering about where Saddam's WMD's were? I have no idea if he still had them or not by the time of the invasion, but if he did I'm sure he was itching to use them on rebellious Iraqis, assuming he hadn't already spent them. Which was, of course, why he got the WMD's in the first place.
Then again, though, I guess Saddam being toppled by the US military wasn't as bad as it might have been if he had just died by himself. An oil fueled power vacuum after his death could well have become a complete disaster. In any case, I'm just waiting for Greater Iran to happen.