I don't have a horse in this race, but what about pyrite? It has most of the aesthetic properties of gold (which I think everyone agrees is where most of the value comes from), but almost none of the value. Pyrite is a real, physical thing that will not disappear tomorrow. However, it has almost no value.

I guess what I am trying to say is that there is a lot more that goes into value than utility. That's why I do not think that people always act rationally. Clearly there is something irrational about people's relationship with gold that makes it valuable. I don't see why crypto cannot have a similar irrational evaluation. Sure, it could go "poof" tomorrow, but I don't know if that will stop people from seeing it as valuable.