Apocalypse is a rather odd fantasy. To be derivative, I think this quote by Alex Steffen pretty much captures what bugs me about it:

If things do come unraveled, they present not a golden opportunity for lone wolves and well-armed geeks, but a reality of babies with diarrhea, of bugs and weird weather and dust everywhere, of never enough to eat, of famine and starving, hollow-eyed people, of drunken soldiers full of boredom and self-hate, of random murder and rape and wars which accomplish nothing, of many fine things lost for no reason and nothing of any value gained. And survivalists, if they actually manage to avoid becoming the prey of larger groups, sitting bitter and cold and hungry and paranoid, watching their supplies run low and wishing they had a clean bed and some friends. Of all the lies we tell ourselves, this is the biggest: that there is any world worth living in that involves the breakdown of society.

Of course at some hypothetical point we have to ask what we're going to do to deal with a collapse rather than to avoid it. Right now I think avoiding is still a realistic strategy.