Future of America

I was wondering how bad will it be for America's future generations considering that all is going wrong? I'm not just talking under Bush and Obama/McCain but I mean like 20-30 yrs. down the line how bad has America become been affected by the economy failings, overseas wars, etc? Also, is it even still worth being an American citizen one of my friend's uncle is leaving for New Zeland away from all the crap that's happening in the world, I'm just curious as to how badly my generation will be affected?