Let us all bury fiat money then. What is fiat money after all? It is nothing more than just a piece of worthless paper. Or perhaps let us also bury gold and silver? What is gold or silver? They are just tiny stones mined from muddy mountains or under dirt. You know what, everything that has value in this mad world is agreed upon. Your bills and coins will give you food to eat, a car to drive, and a home to shelter you. But what is that really? They are simply human creations out worthless materials that began to acquire value because everybody agreed to.
Value is something that has practical utility, be it: legal claim that grants rights to tangible goods and services or tangible goods and services. Numbers on the internet are no such things. Crypto is neither a legal claim nor something tangible. It's just an empty number, a numerical value. If you give your iPhone to someone and as a result some number has been modified this won't make this number practically useful. If no legally enforceable claim exists that is represented with this number, than this is the same as throwing away your iPhone.