Now we got crypocurrency, e-banking, e-money, and such. While fiat money is also in the verge of collapse, i think gold will fall faster eventually.
There might be a case to be made that the more abstract finance becomes, the more important it is that there's something with value that stands completely outside it.
As long as central banks and governments exist there'll be some sort of place for gold even if the public has zero desire. The next few decades will be a pretty surreal ride whatever happens.