Re "bugging-in", it seems to me that a broad scale pandemic could shut down a lot of utilities. With the workers that keep the cogs greased and turning not showing up, a lot of utilities that a city like New York and others rely on could fail -- electricity, water, sewage. . . How are you set up for living "off-grid"?
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Better is the Enemy of Good Enough.
Okay, what’s your point??