Bitcoin, and its like, is a confidence, almost a fantasy proposition. It has no intrinsic value and is not tied to any kind of financial measures that can give investors any kind of reassurance, in other words, its more of a gamble that a reality. While people think that it exists, then it does exist, The moment that they think that it doesn't exist, then it will disappear in a blaze of smoke and despair . It is impossible to predict its future, as normally accepted economic drivers do not seem to be an influence on value. even over a short period, it could rise to unprecedented levels on a wave of blind confidence and speculation, or it could just as easily disappear, almost over night. To me, its an unjustified gamble, a bit like derivatives, or spread betting. I would put them all in the same set. This is, of course, a very personal view.