never been in usa, so it's hard to reply trying to making a serious discussion.
All the European countries have millennia of history. Even when they are "young" as a State (Italy for example). This is history, and I don't mean a simple succession of facts, is the history of the western society, and it goes from the greek polis to the roman empire, the barbaric invasions, the new raise of rome as religious capital, the renaissance, the Luther's reform, the french revolution, the world wars, the industrial revolution, communism.... and the birth of USA is one of those big chapters.
You are the product of those millenia of history exactly like us because we have the same fathers but more like if you are a relative who wanted to go away from his known world starting something completely new.
This history define what we are as individuals, what is our role in our societies, the philosophy of states as organizations... even if we are not aware of it, and the results aren't the same for all the western societies, and I don't think that americans realize how different they are from many of the europeans, and viceversa, as europeans are often very different to each other (there are for example big differences between catholic and protestan states).
Those differences are usually perceived in a negative way, and tends to vanish into a nationalistic beliefs, like when you as a fan of a football team judge the fans of another team.
I think that we live in a period of great transformations of the results of this history, those transformations are in act in your society but also, in a different manner, in Europe, althought we don't completely realise it, and they are causing a crisis of our old "weltanschaung" but it is easyer to see the problems of the neighbor than our owns.
There are many other reasons for all the misunderstandings between usa and europe, I just cleaned the surface, trying to go over the stereotypes of the american cowboys, stupid, ignorant, who believe that everything has a price, and the europeans weak, traitors etc etc
Personally I hope -but doubt so- that one day we'll go over those misunderstanding finding a way to learn from each other (and we need it badly!)... before we'll have to start learning chinese:)