Why are Europeans so rude compared to Americans?

I'm an American who has been to Europe twice -- 3 weeks in total and the thing that always stands out is how rude Europeans are. In London restaurants, they don't say "thank you" when I pay them, and when I say "thank you" when they bring out my food, I don't get a "you're welcome." I walk into a restaurant, no greeting from them, they just tell me where to sit like I'm cattle. It's even more deplorable in Italy and Germany. They push and shove you without saying "excuse me" even though many Germans know English. It wasn't THAT bad in france. I did hear "pardon" and "bonjour," but the people still aren't as friendly as in the U. S.

Why are Europeans so rude compared to Americans?
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