Those who think chaos would keep you on your toes would soon discover chaos fatigue. Just as in combat fatigue you can only take so much, no one is an endless fount of brave, unless of course it is on the interwebz...
Thinking those who have seen an endless parade of loved ones dying are rather clueless what this chaos will do to their loved ones.
Those who think the chaos world is close to their idea of the world they would like most likely would be the first killed off.
I tend to agree with American, there maybe areas where total lawlessness breaks out, lets face it most of suburbia is a week away from chaos if goods stop flowing in, BUT there won't be huge regions that lose any sense of order.
Now the book is a work of fiction and you must suspense disbelief to accept the story line. Some guys in Philly once brought this up, getting out of Dodge when it all goes south. Not likely. One thing I don't think many consider is a great many of the firearms so enshrined as home defense will be used by 1st time criminals looking for food or fuel to save their families. That and most modern houses are not even bullet resistant, much less proof.
My thought on if a huge region was to go rogue and the surviving parts too weak to restore law and order in the 'Badlands', the marauding bands will get better, not worse off. The weak and the reckless will perish, but the ruthless and skilled will continue. The hordes from the steppes that ran wild in Europe were the product of centuries of warfare on the steppes... some say those who invaded Europe were the LOSERS of the fights for the vast, rather empty steppes. Imagine if the winners came first!
most the honorable death/dishonorable life talk doesn't follow reality but seems more some community college course coffee discussion.
Best to just leave it at that.