This idea that America will fall and be replaced with 'nothing' is a pipe dream. Eventually, some other nation(s) and/or other existing power structures, and most assuredly some new ones would all be tripping over themselves trying to fill the massive power vacuum that a collapse would create.
People will always seek power with controlling others as being the ultimate goal. It's pretty much always been that way throughout history (just about any version of it) and I really don't think it's going to change anytime soon.
Sorry to be so blunt about it, but this whole stateless society thing just isn't going to happen, at least not anytime soon. To have it, NO countries could exist, and it's hard enough getting people on this very site to agree with each other, nevermind 7.2 billion+ people.
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