Cryptocurrencies Are A Fad Best Avoided

"Cryptocurrencies don’t belong in your portfolio. The reason is you can’t value them. An asset that doesn’t pay even a notional stream of cashflows — like bonds, which pay interest, or shares, which pay dividends, or property, which provides rental income — is just a gamble. By all means engage in it, like punting on a roulette wheel, for recreation, but be prepared to lose your entire stake."