Oh, I totally agree with you if you’re already in a good location. Worse comes to worse, you can “go Amish.” It won’t be easy, but it will be doable.
And with the number of scoped rifles out in the hinterland, it won’t be much fun being in a gang of raiders. Organized militias with some form of military discipline might be willing to take casualties to take territory, but rabble won’t.
Yes, necessity really is the Mother of invention and other things.
I read the story of U-boat 124, the Edelweiss Boat, and one tight spot they found themselves. In the middle of the Atlantic they burned out a bearing in the diesel engine and although they had a machine shop on board they had nothing to use for the material.
Finally someone figured out that their cigarette packs contained a foil which was made of the same material as the bearings. After collecting every pack they had, they had just enough material to cast and then machine a bearing. They made it home on that makeshift part.