The fact that people see crypto as a means to make a huge amount of money, either by its appreciation or through nefarious means, shows that it is not a valid or reputable currency. Yes, the prices of currencies fluctuate, but rather modestly for the dollar, euro, yen, etc. You can’t have a usable currency that fluctuates 2–3x in value, and that is so easily manipulated by scammers. The underlying principle of crypto undoubtedly has merit, but until it becomes more transparent and less environmentally destructive, it should be avoided at all costs.