I signed up for the Escapist just to answer this thread too! first off I'm an American, born, raised, and also an Army Veteran who went to war in Iraq years ago. Really to answer this question why America is great, is kind of arrogant and it would be easy to come off as the typical "Ugly American" but here goes. America is great because I can say George Bush has been a total war mongering, torturing asshole, who deserves to go on trial for war crimes against humanity, and no secret police will bang down my door and arrest me!
America is great because the Constitution was designed with checks and balances, and as bad as the U.S. has been the last eight years, the pendulum is swinging back. America is great because we have corruption, but don't stand for it for long. America is great because Bill Gates the richest man in the world lives here, and he's giving most of his money away to help people in Africa, and the rest of the world. America is great because we make most of the best movies. America is great because we are the world. Yes, people from all over the world have come to live here in one diverse melting pot. America is great because we love or hate France depending on which American you talk to. (I love France. And French women too!) America is great because we invented the Internet. America is great because we have great colleges. America is great because our greed fucked up the world's economy, and we have the balls to admit it and try to repair it. Not only that: the average American citizen is mad as Hell at the greed on Wall Street. We won't stand for that either. America is great because despite mostly being a Christian nation, we have no state religion, and 2 million Muslims live here in peace. Finally America is great because all the best things we love about other countries we bring here. Including Thai food, German, and Japanese cars, Russian mail order brides, Guillermo del Toro, Cate Blanchett, Pasta. I know that's an somewhat arbitrary list; we're really a bunch of self absorbed consumers, who speak one language and want to learn another (Spanish.) but we're trying to improve, and we did elect in Barack Obama a talented, smart, visionary black man, so that might be something.