As for why I spend time on Bitcoin when I could be playing League of Legends: although the graphics are a lot less good and I believe BTC have a true market value below that of Riot Points, I find it intellectually interesting, and ultimately "I find it intellectually interesting" gives me carte blanche to spend time looking into almost anything.
The capitalist in me realized at one point, though, that I'm consistently in a room full of rich, smart people who are Bitcoin fans. This suggests one of two possibilities: one, I'm dead wrong. Two, I am not wrong, and I should engage in mutually beneficial trades with these rich smart people, such as paying them meaningful amounts of money in return for derivatives positions which only pay out if Bitcoin loses "a gigantic amount" of its present value.
I might at some point decide to communicate what I know to the wider community via market mechanisms such as e.g. buying puts in the Winklevoss BTC ETF, but as that is presently impossible and a wee bit against my intuitive sense of justice, I have been communicating with the community earlier via various textboxes.
Again, if you think I'm a crank, feel free to ignore. If you meet any rich people who love Bitcoin, you can tell them to ignore me, too, and to sell far-dated deeply out of the money BTC ETF puts. If you think Bitcoin is going to the moon then selling 100k BTC worth of puts at a $10 a coin strike price means heads you get free money and tails means you pick up 100k BTC for only a million dollars!