Maybe under these circumstances we could dismiss the negative outcomes of regulation and central planning. Until then, we live in the real world, where utopian dreams are not within our reach.
Ironically enough, it is the regulation which you opine for which creates the value for cryptocurrency. Want to pay a user 0.00001 cents? Not with Paypal. The regulatory overhead is too high. Want to transact online with no ID? Not possible with banks or traditional instruments. Have a problem with government issued currency? Sorry, you cannot transact at all!
The comments here citing the technical problems of cryptocurrency miss these points. The generalizations about energy usage dismiss altcoins which have innovated beyond these issues.
The last resort of these arguments always backpedals to, "But that's not the popular usage of cryptocurrency"
The point stands, the generalization is inaccurate, presumptive and arrogant.