I agree trust would be extremely important. It is something that would take time to put together and plan for. Im pretty new here too and have only met a few people.
Irving you are right if you place burns down you need to go. Again Having someplace to fall back to with people you know would be better than trying to stand your ground on your own. And if its close to your home already you would be closer to your supplies. But going with your thought lets say the SHTF and you werent home. You come home and your house is burned down with all your supplies and guns. Would you rather be moving on your own with only a go bag or have a place that you can go to that would be safer?