For awhile I insisted that all cryptocurrencies were bullshit and also Ponzi schemes, but given how many people take pleasure in buying them, selling them, and talking about them, I've come round to viewing them as a kind of in-game currency, with the game being a bit like those role-playing games that you play in your neighborhood while interacting with the real world. Anyone who grew up playing some variation of Assassin, especially the multi-day assassin games where you and your friends were still playing even when you went to school, and occasionally you had to tell teachers "I don't want to run this message to the main office because I think my friend Jim has a plan to get me if I go there." Much laughter.

Cryptocurrencies are starting to feel like that, a massive game that people take pleasure in. Nothing wrong with that. I've enjoyed real-world role-playing games, so I don't want to judge anyone else who is into such things.

Is it crazy to make a game currency your main form of investment? Maybe, but not automatically. You should, of course, invest in a diversified portfolio, but if you want to go long on this particular kind of game, it might pay off huge in the end.

I recall when I was a child me and my friends played Dungeons and Dragons -- long running campaigns that went on for years. One of the parents of my friends was upset by this and said it wasn't really a game because it didn't end and nobody could be declared a winner. I'm afraid my initial reaction to cryptocurrencies was similar, not seeing it as a game and rejecting it as not being real.

Of course, a big difference is that we insisted Dungeons and Dragons was a game, whereas the proponents of cryptocurrencies continue to insist that this is not a game. Some make some variation of the argument "there is so much money in this, it's too big to be a game" but that's an incorrect understanding of a game. There is a lot of money in esports, but we are still talking about games.

I've come round to accepting that cryptocurrencies are here to stay. I no longer consider them Ponzi schemes, I do regard them as a kind of play activity, one that deliberately tries to blue the line between play and non-play. To the extent that they enable certain kinds of criminal activity, they become real and can be used in non-play contexts. But mostly, this is a kind of play that some people find pleasure in, and there is no point in berating them for it.