Well I'll answer point by point.
A)There are not many worse than Hussain, and regime change that had regime change possible as well. There is only one worse that I can think about;Kim Jong Il. But he has nuclear weapons so he is untouchable. Secondly don't put it all on the United States for pushing for war. There were others as well. As Peter Mandelson Said in a MAnchester Guardian Article, "If Bush Didn't want to go war, Blair would of pushed him anyways." Had the US waited for more inspections, (which would of not been conclusive in my mind), Chirac would of followed him as well. Really I think Chirac's position had to do with a deal he made with Schroeder. Chirac got support to kill the Franz Fishler's Common Agricultural Policy reforms, while Schroeder would not be left hanging for his anti war campaign promise. If it is true, than that is almost as bad as well.
B) I believe you are reffering to the Guantanamo Camp. No Iraqi citizens were put into Guantanamo. Guantanamo was set up for Al Qaeda operatives. Combatants in the Iraq war were protected by the Geneva convention, rather than Al Qaeda operatives.
C) If you can level that claim at anyone it should be American Networks, not the US government. The US is not some propaganda machine that spews out misinformation. Ithink you should face the reality on this one. Iraq featured the most coverage in the conflict than any war before it. Whatever you say about Embedded reporters, if the US did anything grossly improper, they would of seen it and report it. If you look today, the American government is suffering itself from bad press. The US is making strides in the getting the country back in order. How much of it gets reported? Absolutely none of it. All the news that comes out is "another soldier killed" or "Oil Plant Bombed". The North, with Mosul and Kirkuk has returned to a sense of norlmalcy.
D)That is an extremely Narrow view. Yes I won't deny that the US is having extreme problems with general lawlessness policing, especially in Tikrit and in the "sunni triangle" but to say that only 100 days after is being extremely Unfair. As I mentioned above, there has been progress in the north and the south, and those areas are relatively secure. I think the major reason why people are being lawless is because they know now there is no secret police behind them. Im not making that an excuse but you can't deny that there is more freedom now then there was before. If that continues to increase and more law come in then I would say the war is justified. But If the US fails, then the war would not be justified.
I do think that the US needs to learn some "political correctness" and act more like policemen than the occupation force. They are alienating a lot of the people there by some of the tactics they are using (to search for ex Baathist party members) But I think a lot of that has to do with the US unfamiliarity with peacekeeping. That is why I think the EU and the UN needs to be brought in, which has far more experience in this field.
E) Uhh what democracies has it overthrown the middle east? This is a region with no democracies in its past. (the First was Israel in 1949. ). really if you look into the day of the Truman Administration, the US was the one who pushed the most for decolonialization across the world. I won't deny that the US did do some very bad things, such as the Allyende coup in Argentina and supporting the Iraqi regime in the 1980s, the Reagan policy towards Nicaragua, but given the threat of the USSR, they thought themselves justified (sometimes they arent, sometimes they are)
F ) Completely wrong. The US did not protect oil installations either, Iraqi oil output is far lower than it has ever been because of damage and looting. Notice there have been three bombings of pipelines since then as well. I've seen photos and reports about the condition of them. Notice that the crude oil price is just as high now as it was during the war. If the US did protect the Museums, I think valuable infrastructure like water resources would of been looted then instead.
And you ask who's objective? You can try to be, if you can honestly make an attempt to understand both sides as much as possible, you can come close. Its really easy to bash the US today, there is so much garbage out there anti-US, that has no truth to it.