Crypto's fundamental concept is decentralization and if we look at the POW (Proof of Work) based mining then with the passage of time it would tend to be a centralized one and that is the reason why we must think of an alternative which would not only cater the disadvantages of POW method of mining but also keep the very fundamental principle that is "decentralization" intact. And for this to achieve, PoS can be the best possible alternative which not only save the tremendous amount of energy but also keep the decentralization principle intact. And in addition to that it would make the cost of a "hacking" unbearable for a hacker.

So the bottom line is that the future of mining in crypto is POS only and that will be a broad based concept 1/2 year down the line.

Thank you and Have a great day.