Mark Moss argues Bitcoin should never be sold because only 21 million will ever exist. With 55 million millionaires worldwide, there aren't enough bitcoins for each to own half of one. He compares it to owning ten Manhattan city blocks 150 years ago: once sold, you could never buy back an equivalent piece.
The reason why you never want to sell your Bitcoin is because it's one of the most scarce assets in the world, and if you get rid of it today, the chance of you getting it back is slim. There will never be more than 21 million Bitcoin. There's about 55 million millionaires in the world, so there's not even enough Bitcoin for every millionaire to own half of one. Let's just say hypothetically, 150 years ago, your family came from Europe, landed in New York, and bought 10 city blocks of Manhattan. When would have been the best time to sell those? The answer is never. And the reason why the answer is never is because the chance of getting 10 continuous city blocks again is about zero. So when you have a scarce asset that's most likely continue to compound over a long period of time and is so scarce, if I sell that asset, the chance of me ever getting that back is slim. You hold on to it, you hold it forever.
