That is actually fairly common. Gold has been around for millennia, found basically 0 practical applications [0]. The value of something is roughly the marginal difficulty of procuring the thing by whether someone wants to own it, and at the moment nobody can create bitcoin for substantially less than $100k and broadly speaking people will always want to own them at some price.
That being said, I don't think bitcoin will hold its value long term. But the money question now is whether the collapse happens on the scale of years, decades, centuries or millenia.
[0] The purpose of gold jewellery is to demonstrate that someone has gold/the wealth to do something impractical; otherwise we could make plastic jewellery that is prettier, lighter and cheaper.