First, humans exchanged commodities. You could eat it, burn it for energy, modify it to create tools or jewelry. You exchanged something useful for something useful.
* It was energy.
Then, humans exchanged commodities for gold. You couldn't eat it or burn but it was still possible to modify it.
* It was poor energy.
Then, humans used papers checks or bank notes. It wasn't very useful, but you still could burn it during a very cold winter.
* It was very poor energy.
Now, we wants to use Cryptocurrencies. You can't do anything with it.
* It is not energy but proof of destruction of energy.
Something looks wrong. We should exchange potential energy, not destroyed energy.
The world is evolving and if we do not go with the flow we will be left behind and suffer in poverty and hunger. Poverty levels are now very high across the world and lands are owned by millionaires and poor citizens live on the slums. Agricultural areas were now converted to agro-industrial lands and that is why barter trade is no longer useful today since not all people does have a land to cultivate. So today if we do not join with cryptocurrency and buy some bitcoins we will be blaming ourselves in the future as to why we does not join in this new currency.