Interesting. Since I am the one who keeps 20+ gallons of bottled water and a stockpile of food on hand at work, I guess it is redundant for me. I am already sharing these supplies with everyone in our group, and keep the stock up sufficiently. Since I am able to plan for this, I can surplus the supplies so that it doesn't burden my private stash, and everyone is grateful and would be moreso when something bad happens. I'd say we have enough provisions for all of us to get by on for at least 3 days should we have to shelter in place. Since we are in a secured area, I really don't have to plan for provisioning for anyone else outside our group. Yeah, it costs me about $50 a month. I accept donations, which helps ease their conscience. More importantly, they feel cared for, and such outlays have no significant impact on my budget plans.
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The ultimate result of shielding men from the effects of folly is to fill the world with fools.
-- Herbert Spencer, English Philosopher (1820-1903)