Crypto's is a revolution and is here to stay and are the future imo. 200 years time the kids will be saying, Grandma were you alive when people used to walk into those funny little shops that had money in them. Grandma will laugh and say yes dear while the kid giggles in wonder. Anyway none of us will be alive to see it. Just my opinion, not fact. Look how much banks have changed in the last 200 years and they are all nearly digital now going card less and cash less.
I've been watching them for 18 months on https://cryptowat.ch/ and it's constantly growing with more popping up.