I understand the technology etc... behind it, but I still can see scenarios where it goes nearly to 0, and scenarios where it goes 20x. My main problem is I have no feeling of how to assign valuation, so I know when it is time to buy or sell, it basically feels like almost pure speculation. The short term reasons for ups/downs are even more ephemeral than penny stocks. I also know that this is closer to a commodity, so when it hits its ceiling, there will be absolutely no upside at that point, at least for quite awhile, as commodities are pretty awful in the long term. As such, I cannot invest in it, and will never invest in it until I reach the point where I have some grasp on the valuation. I don't feel like I'm missing out as there are assets that I can understand much better as to where they are going.