as a former crypto investor and current stock investor myself, I choose to not invest in crypto. may sound abrupt but I feel like they are a different form of a ponzi scheme, even though it is not designed or intended to be. Without going into great detail they are mainly based on investing purposes more so than actual currency due to the volatility. the more people get into it, the value goes up. But for it to ever be a mainstream use of currency would never work, due to countries having different values of their own currency. If china or Americas currency where to ever just go valueless( which would be much bigger probs and prob not happen) then this would greatly effect the value of cryptos. who wants to put there actual currency into another form of currency that can triple upwards or downsize by 300% in a week, only investors to gamble on making money off it, and thats all it will mainly be based on.