The world has created, in Bitcoin, a currency that soaks up vast resources deliberately to create a value for itself - which in common with all currencies has no 'true' value at all? Hence its extreme volatility.

The basis of Bitcoin is that it is has a value because it costs a lot in energy, hardware and coding excellence to 'mine'. Shouldn't we, as a species, be doing something better with our limited resources than deliberately wasting them in this way?