What is the future of crypto currency?

We have never thought about this!

There will come a time when both paper or metal currency will be out of circulation and need. Then people will transact only through cryptocurrencies. Although this may sound strange, it is a realistic and far-reaching idea. Just think about $BTC , what was its valuation when it was first launched in 2009 and how much is it worth now! But without saying a word, money or different currency names will remain, only all processes will be crypto based. Isn't that amazing?