Bitcoin’s market capitalisation reached new peaks in November 2021. This column suggests it is hard to find arguments supporting the cryptocurrency’s current valuation. Even if the financial stability risks of a Bitcoin collapse could be contained, the burst of the bubble would imply painful losses for many retail investors and society at large. The authors conclude that public authorities should refrain from taking measures supporting additional investment flows into Bitcoin and should treat it as rigorously as the conventional financial industry to combat illicit payments, money laundering, and terrorist financing.