paper in very good conditions (temperature controlled enclosure, with little to no air exchange with open environment). Assuming a normal hdd lasts 10ish years, and you do something like 1 to 1 redundancies, you can store digital stuff for cheaper, and lighter. I am not saying all physical stuff is bad, but paper is not good, unless you use some re-enforced papers like cloth or plastic
I have a bookcase full of cook books.
They'll always be there, and none of them have a long made up personal story before the recipe. Pluse they're hand me down from my grandparents.