In full on survival mode, those that bring something to the table will be fed. Those that don't will starve. If you darken my door looking for food, you'd better be hauling a load of firewood, clothing, medicine, 1st Aid supplies, something of value. You'd better be willing to stay and build a community of hard working, survival minded folks. Strength in numbers and many hands make light work.
If all you bring to the table is your worthless need, you're SOL!
Nothing more to add to this.