Well, not to sound offensive, but whenever someone from the US asks me where I'm from, I'll say "Buenos Aires, way south of South America", because I assume they don't know where Buenos Aires is.
Americans are always nice, sometimes TOO nice, but they always sound condescending when talking to foreigners. Some of their customs I'm alright with (Air Conditioning practically everywhere, SIGN ME UP) but others I think are rather thick-headed (the way you guys do long division, MY GOD that's unnecessarily complicated, and I think that the differences between Republican and Democrat are rather petty compared to other multi-party countries elsewhere)
I actually love Americans (except for their accents, which can sometimes border on infuriating), even if the average citizen isn't quite as educated as most of the people I know here. But I prefer uneducated to the snobbish, full-of-themselves porteños (average Buenos Aires citizen).
Just to make it clear, if I had the money, I'd drop everything and move to the US.