Yea there is one thing that keeps me not listening to all these people with extreme view points and predictions of the next great collapse of America and that is this,

We have enough resources in North America to create our own economy that is not in anyway reliant on the rest of the world at all.

North America = (USA, Mexico & Canada)

Not saying this is what we need to do, just saying the rest of the world needs us more than we need them.