> Bitcoin and 3D printing were craze.

What bitcoin gave us essentially? Huge pump and dump schemes coordinated by big hands? Crypto investments which made 95% of investors poorer? What's left? Maybe 0.01% of it was beneficial.

Freedom from overregulated and antiquated retail banking especially wrt cross-border transfers.

I guess it isn't that noticeable from inside US, but the rest of the world is grateful.

> the rest of the world is grateful.

Maybe speak for yourself? As part of the rest of the world, I am not grateful.

And I do. Speak, that is.