Cryptocurrencies are interesting...
Cryptocurrencies are interesting because they are no less real than the fabricated, but strangely accepted, warped reality of money circulating ("creation") schemes such future markets trading and other promisory trading schemes where it turns out that nothing is actually traded and often nothing happens at all, however it is very important to pretend that something has. In fact cryptocurrencies are probably better because at least most cryptocurrencies have a limited resource and accountability built in.