His demise caused some kind of butterfly effect and destabilized whole Middle East region.
We may forget today, but under Hussein's rule, Iraq became one of the most developed and richest Arab country.
He was an iron ruler but at least he kept things under control, USA needs to remember that when they will try to assassinate or take down another dictator.
Things went bad for Saddam, when he decided to invade Kuwait. There was no need for such an invasion, when it was clear that the GCC and the NATO would protect Kuwait. Perhaps he got too arrogant.