I guess I have a problem with greatness. Great at what? Great perpetrator of violence? Great extractor of resources? Great polluter and destroyer of the environment? Great military power? Great imprisoners? Great torturers? Great liars? If those are the categories...
then America is G R E A T !

If we're talking about the best country in which to live, then the US is way down the list. I'm not a magic mirror so I can't really say which country is best...probably depends on your lifestyle, but my money would be on one of the Scandinavian countries...or maybe New Zealand...or Bhutan...or...? Regardless of which country is best, many other countries offer their citizens better opportunities and lives than the US offers its citizens. The entire concept of being great is a farce.