Costco was out of all paper supplies the day I restocked toilet paper/paper towels/kleenex about two weeks ago.
I have never believed in just-in-time stocking. Maybe because my grandmother grew up in a Mormon household and they have that thing where you're supposed to stockpile supplies? Or because I lived in Mormon country for my most formative years? Maybe I remember too many stories from my grandmother about the depression or my own mom scrounging up change to buy bread? Or maybe because I'm fundamentally rational and think that supply chain interruption or failure is always a possibility?
I currently have somewhere between 60 & 70 rolls of toilet paper on hand, which is about a 4 month supply for 2 people based on published averages. I have at least 2 months worth on hand at all times.
I do drive my wife a little crazy. She hates having too much stuff. Left to my own devices, I'd have a year's worth of food, water, and all other consumables stockpiled at all times.