Such an argument runs into an inevitable hurdle, though: If you actually like cruises (no accounting for taste), you may think it’s worth it to burn all that bunker fuel. By the same token, most arguments against Bitcoin’s energy use presume that the energy is being wasted, without actually supporting that assumption. In essence, talking about energy use is a trick, a way to make the argument that “Bitcoin is just a scam” at a time when that argument is becoming less tenable by the day.