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As per the current model of crypto mining, it looks hard to happen! However, if the entire economy moves to cryptos and fiat becomes irrelevant, probably mankind will be spending quite less than what they are spending now on minting money! However, the chance of happening it, is pretty slim!
As per the current model of crypto mining, it looks hard to happen! However, if the entire economy moves to cryptos and fiat becomes irrelevant, probably mankind will be spending quite less than what they are spending now on minting money! However, the chance of happening it, is pretty slim!
In fact - currently the most popular crypto system based on PoW mining can not be called as eco-friendly. Various sources say that the energy used for currency mining exceeds the total energy demand of several countries. For example, the production of bictoin takes more electricity than the demand of for example, Romania, and similar to Israel or Greece.
surce: https://digiconomist.net/bitcoin-energy-consumption
Fortunately, new cryptocurrencies change algorithms and instead of the most popular PoW, they start using other solutions like PoS, which causes that the demand for energy consumption is definitely lower - and this can transfer cryptocurrencies to an environmentally friendly path.