I think I need to clarify one thing. My original post said nothing about living out of this pack for ever. The term I used was indeterminate meaning you can never be sure just how long you're going to have to fend for yourself in such a situation.

I'm not a 'survival property'/stockpile/etc (that's borderline crazy to me...no offense intended) type but I like to be prepared for the unexpected and planning like this helps me to be prepared for events I can plan for.