No reason? I think the USA has been a magnet for greedy sociopaths from across the world throughout its history, and it wouldn't surprise me if that has had a lasting effect on the national character. American mythology insists that folks cast up on these shores are invariably the victims of irrational prejudice back in their homeland, but one would have to assume that some proportion of these people didn't fit in in the old country, whatever country that might happen to be, simply because they were so relentlessly selfish. America's weird, abiding hatred of socialism does suggest that the US population has a virtually genetic predisposition toward greed.
Carl
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