We Americans are very fortunate. Our farmers can grow enough food for us, and the country is big enough that one weather incident (drought or flood) doesn't wipe out all our food stocks. We don't need to learn another language, unless we choose to, and we don't need to leave our birth cities to get education. Trouble is, we travel to countries where that isn't the case.
I don't think Americans in general or TAR racers in particular are more or less rude than people from other countries. What we ARE good at, is forgetting how good we have it. Instead of marveling at how cushy our lives are, we complain when we can't live that exact lifestyle somewhere else.