I honestly don't know why crypto and energy is now talk of the town, we all know that mining of coin consumes energy and is not only mining of coin that consumes energy. Now that elon musk is talking about btc consuming alot of energy is like starting a war. We should all know that something like this might come up sometime, we just have to be prepared when next something like this comes up.
Crypto and energy are always discussed because they are related to the future of the earth,
if they can indeed give the earth a longer life, of course blockchain and crypto currency will always be used all over the world,
and when compared to some other assets such as gold, silver etc., currency crypto is really energy efficient, of course this will be an interesting topic