The value is not nothing. The value is that they can be used to buy real things, and there will never be another one made.
Ever. So, they are a pretty good arbiter of the rapidly declining value of the dollar.
So how much are all the bitcoins currently in existence worth? How many are in the hands of the early creators? And even if they create the 21 million bitcoins planned, at the current rate that’s $10 billion worth of value, hardly enough to send world economies into a tailspin