Iraq is currently a democracy... and very likely will soon be able to be stable and be it's own country ruled by the people.
That in of itself will be a good thing.
The rest of your post is really... pointless rambling that in no way was actually effected by the Iraq war.
Terrorism from the middle east hits countries not even remotely related to the stuff those terrorists blame on the USA.
As for the rest. I actually did say it was Bush's mistake. However, his mistake was not what you accused him of.
Though Saddam also did have some blame... this is the real world here. Giant international mistakes don't happen because of 1 mistake. They happen beause of many mistakes caused by many people.
If you wanted me to do a "blame analysis ratio" it'd look like this.
30% Bush (For the reasons above)
20% American Media (Stopped being journalists for a while and doing their job... this is partly why they've been so hard on republicans in general and democrat sided lately.)
15% UN (Didn't impose strong enough guidelines)
15% Democrats (A lot stopped being Democrats... then hid behind "We technically let him voted cTp declare war but we didn't think he would!"
10% Saddam Hussein (For being obstinate for no reason... and well wanting WMDs.
5% Al Queada (They did get everyone paranoid enough for everyone to act like dumbasses.
5% North Korea (The very fact they were striving for Nuclear weapons made it so that Bush had to act in one of those cases. Had 2 of the 3 "Axis of evil nations" gotten nukes... wouldn't of looked good.)