We fight in defense of the freedom of countries other than just our own. It would seem france (small "f" intentional), and a large swath of Europe owes us pretty big for defensive actions. Also, after Japan attacked Pearl Harbor, do you think our response was not defensive? I'd say that our "American army", which you hold in such contempt, had a huge role in saving the world on more than one occasion, even despite your "worldly" opinion.
In more recent developments, Iraqis no longer need fear having their skin severely lacerated and then dragged through pits of raw sewage and left to die for political dissension. It's not a perfect place right now, but military action is not utopia-building. It's for removing threats. Saddam was a threat to allies, and attempted on numerous occasions to shoot down U.S. fighter planes which were doing nothing but protecting U.S. allies in the region by enforcing a no-fly zone, which was a condition of ending the first war.
We U.S.A.ians tend to be expected to use our might to "do something" about all the atrocities around the world, but when we do decide to "do something", another group of pissy pansy pukes (you) pop up and pontificate about how terrible we are, and that we aren't defending anything as much as attacking.
In closing, please go suck dead donkey balls you mindless ignorant liberal-fantasy spewing ass pirate.