It took decades for the US to stabilize itself as a nation after its birth.
Why would you think Iraq would find it easy to stabilize itself post Hussein, such that you'd declare their future void already. Iraq is not yet a failure and is dramatically more stable than it was under Hussein (dictatorships bring hyper instability universally, which is why they have to constantly murder & terrify everybody to try to keep the system from instantly imploding due to the perpetual instability inherent in dictatorship).
Germany, Italy, Japan, South Korea, Taiwan, Kuwait, and most of Eastern Europe (which the US was extremely deep in interfering with for decades in competition with the USSR). You can also add Colombia to that list, it is a successful outcome thus far of US interference.
I like the part where people pretend the vast interference in positive outcomes don't count. The US positively, endlessly interfered in Europe for the past century. That interference has overwhelmingly turned out well.
"Don't worry, the democracy will eventually trickle down".
There is such thing as a post-Vietnam America, and its record is pretty bad.
"That interference has overwhelmingly turned out well."
What an absurd thing to say. The US doesn't only overthrow dictatorships - it supports them too, as it suits its self-interest. Why not include the US interference when it SUPPORTED Hussein and later changed its mind - still think "interference turns out well" after backing a genocidal monster, supporting his invasion of a neighbour, invading twice and related deaths of 400 000 people?
Countries stabilise over time, that's what their people make happen. You ignore Indonesia, Iran, El Salvador, Nicaragua and dozens of disaster of US imperialism but give credit to the US when their populations rebuild them.
The US has done some positive things but they're the convenient accidents you've cherry picked to make your point.
> The US positively, endlessly interfered in Europe for the past century. That interference has overwhelmingly turned out well.
Are we counting the financial support that Wall Street and the budding CIA boys at Sullivan & Cromwell gave Hitler to harass the Soviet Union, which ultimately had to take care of the problem they created, in the "turning out well" column here?
Kuwait is a dictatorship. South Korea and Taiwan were, too until the 80s-90s. Especially, in the case of Taiwan it is unclear what US intereference there has been politically: the Chinese fought hard to be free of interference and although in Taiwan they need US support I don't think they are as controlled as South Korea and Japan (which has been invaded and "vassalised"). If interefence there is it is indeed to literally interfere to foster separation with the mainland.
Re. Iraq, interestingly the US invasion has vastly increased Iran's influence in the country because the majority is Shia while Saddam was from a Sunni tribe.
And what about the precedent it sets for other world powers?
Why shouldn't Russia or China just do the same and interfere with the leadership of countries they don't like.
Also it is impossible to argue the cost of the war in Iraq was worth the benefit, even if we agree Iraq is in a better place now then it was under Hussein.