That’s the title of my latest piece in Inside Story. Nothing that will surprise anyone who’s been paying attention to what I’ve written on this, so I’ll just cite the conclusion
Since bitcoins are not useful as a medium of exchange, or desirable in themselves, their true value is zero. The highest price at which bitcoins have traded is around $20,000. At the time of writing, the market price is halfway between that level and zero. Pay your money (or not) and take your chances.