Now I'm not saying that nobody thinks the way you're suggesting, I mean stereotypes develope because there are people that fit them. The problem I have is with anyone suggesting that all American's are that way. Also clearly your statement is flawed. You say everyone is this way and that you're an American. Obviously you don't think everything is free or that you can be a winner without putting in any effort. So right there you disprove your own point.
Of course there are exceptions. Many of them. Heck in a country of around 300 million there are millions of exceptions. I'm one of them. You and your friends are too.
I'm not talking about anecdotal evidence though. When you look at American society as a group these are the conclusion that I and many others draw.
We are lazy, apathetic, and have entitlement issues. Thus, our rapid decline. Stupidity is a virtue nowadays.