I actually wonder what will come up after the world has been fully digitized with aid of a blockchain technology ,the family to which bitcoin belongs to,I think there can only be technological advancement in this aspect,not totally obsolete,diamond has been in existence before now years back,but because of it's importance the value and stake is still very high.
I think now is the leading mechanism now, days and bitcoin in a wide range reaching the universe that provides countries with communication to the country through various transactions using bitocin and with the investment they use as well as bitcoin.
With the type of technology we have, and the system is far from obsolete but more profitable