Crypto is not and can never be "currency". When it can take "days" to do a transaction, it cannot be a currency. Hard to buy coffee and stay in line until the transaction is done. Large sums transactions (legal ones at least) are typically done with traceable transfers since it's a way to protect yourself from a cheating party. So, what is left for crypto? They are nothing but ponzy schemes and black market cash equivalent. It was obvious from its inception. I've never touched the stuff as a consequence.