Thank you, If something is too complicated to understand, it's probably because it's a scam - the monetary system is far more straightforward (most of the time). Cryptocurrency is unsustainable because it depends upon electricity to exist - if the power went out tomorrow, then game over. Fiat Currencies on the other hand only need an agreement by society that the government backing that currency is legitimate. There will absolutely be a violent end to the cryptocurrency mania, although the future of them is probably as digital versions of fiat currencies. Elon Musk is a man child melomaniac who is more interested in going to Mars then he is of preserving the Earth, his ability to convince nerds that he is cool is why he's been so successful. Musk is the epitome of "right place at the right time."