On fads. In spite of the hype, I believe Rust is not a fad. It's going to be doing extremely well in 50 years.
I cant condense the background that goes into that statement into a single comment. But a few other languages are valuable too and will be for a while.
I think the ideas that Rust is demonstrating are valuable, and will be around in 50 years. I'm not sure if Rust will be. I sort of hope it won't be, because that implies it'll be replaced by an even better realisation of the same ideas.
I cant condense the background that goes into that statement into a single comment. But a few other languages are valuable too and will be for a while.