This article was a good dive into the technical feats of bitcoin. But this fact still stands:
== Traditional currency ==
- needs central authority
+ energy efficient
== Bitcoin ==
+ doesn't need central authority
- energy intensive
If there already is a central authority you can trust, it doesn't make sense to go through the song and dance of having a trustless currency system designed to work under adversarial conditions. Bitcoin isn't on the cusp of taking over the world, it fulfills a specific niche.
== Traditional currency ==
- needs central authority
+ energy efficient
== Bitcoin ==
+ doesn't need central authority
- energy intensive
If there already is a central authority you can trust, it doesn't make sense to go through the song and dance of having a trustless currency system designed to work under adversarial conditions. Bitcoin isn't on the cusp of taking over the world, it fulfills a specific niche.