I have an allotment. I grow what I like to eat and I'm preparing to do the same this coming year. Any surplus goes in the freezer (rhubarb still from last year and some runner beans).
I grow my own salad in my greenhouse which is in the garden, and we bake our own bread. Getting my seed potatoes this morning ready for the new season ahead, and grow other root veg, onions etc from seed.
As we go off campervanning, I often buy tins (baked beans, soup etc) and dried goods (mash potato, pasta etc) anyway as a convenience so I have a box set aside.
I must admit I've bought extra due to all the stories about running out of stuff as a precaution, and I look on it as a way of forward buying if things remain the same.
I simply don't care whether others think I'm an idiot or not.