Nothing has value in this world.
Even gold has no value on its own.
If there is gold and nobody is willing to buy then its useless. If there is bitcoin and nobody is buying it then it would be waste as well.
But its us humans who create value for things that we are willing to own.
Everybody is willing to own dollars so dollar has value. Now in crypto world people are willing to buy as much bitcoins as they can hence creating value for bitcoin and the more value bitcoin acquired the more difficult it would be to vanish it.
US dollars was backed by gold until Richard Nixon took the USD of the gold standard. Then the USD was backed by oil via the petrodollar. Now the trust in the USD is vanishing and oil producing countries leaving the petrodollar. So now almost the only thing left is the US military. If the oil producing countries not obey the US. The US will send it military and overtake the governments and the control of that country.
We are living in 2017. Not the stone-age. So of course gold have a value these days. The same goes with a Porsche or a nice watch. Back in the stone-age if you was good at throwing. Some could invest in you and give you an ax. So the stone had some value and the ax have an bigger value. So what do you want from your talent? An other stone or an ax or a piece of metal someone just found? My guess you want the metal.
But what if someone would give me more value for holding the stone. I would definately go for that stone.
There are many stones in many shapes and sizes. Even a baby can hold a handful of stones. So the value of stones are very small to none at all. And now back to 2017.