Well, buddy. This is why Capitalism works, and all others pale in comparison. We'll have poverty, we'll have wars in national interest, loss of jobs, to debt. But that will always swing around if people believe in their country, and make tough decisions.
Capitalism has ups and downs, its just how things are. People will always be impoverished, for multiple reasons. People will always wage wars. That's how we are, and how we secure our national interests in the world- its how everyone does. These things happen, and when you realize it its a cleansing experience when looking back in retrospect- but at first quite horrifying. (For me at least.) Take a look at the 20's. Amazing era, US was in an amazing economic position- then they fell into the great depression. But you know what? They got out of the great depression.
Society wouldn't collapse, it can't. We're the stabilizing hyperpower in the world, we can't fall. So, we're going to have to consolidate a little bit- not become isolationist, no. That's what we did in the great depression, and WWII happened among other more major reasons. Its the ups and downs of Capitalism, we'll go into a slight dip, then come back out by solving problems, and not overlooking them.
We won't go into a nuclear war, why? Because of the Ohio Class submarine, and MAD, or Mutually Assured Destruction. Nation's won't destroy each other outright. Noone in power of a size-able nation with a grip on some section of the world are insane. The Russian's aren't/weren't, neither are the Chinese. They may be brutal, but in no way are they insane. Hell, the Soviets thought we were off the wall crazy after the Vietnam war. All of the casualties, and the protests going on, and we pulled through everything just fine.