What will happen??
No one will have the BTC address. Hence will them isolated?
In FIAT, people can handover money to someone.. So, i predict BTC will be disappeared gradually.
I understand that life is unpredictable and you do not know what your family will be, but you need to think about the future, and if you have a certain number of bitcoins, then you can share the address with someone else (with your wife or parents). So in any situation there is a way out.