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I wouldn't say that I hoard, but I established a baseline of goods (not foodstuffs) above and beyond my normal preps to keep in the house in case of shortages. I'm talking toothpaste, detergents, paper products, shit like that, and it's at least twice of what I'd normally keep. When I empty whatever I'm using, I get the spare out of the pantry and put it on my grocery list.
And the way grocery shelves are these days, sometimes stocked and sometimes not, if I see something in the store that I even think we'll need in the near future, I'll toss it in my cart.
Sometimes I get forgetful. The other day I picked up a 10 pack of Ivory soap just because they had it, then when I got home I tossed those in the bathroom cabinet along with the other 40 or 50 bars of soap already there. Hey, the world might end next month but by God, I'm not going to stink when I die.