I strongly agree that in the future bitcoin will eventually disappear. Because many people do not inherit bitcoin, including me
right now who know my private key only me. Maybe the solution so that bitcoin can be inherited, from now on we save it
private key that is easily found by our immediate family.
I think you must have overlooked previous posts which have pointed out remedies to this situation. Particularly, here is an interesting article that tackles that issue.
Bitcoin Firms Report Uptick in Demand for Inheritance Services