> Right now the extra compile-safety of Rust is IMO not worth giving up the other benefits of C++

I can't speak to everyone's use case, but for ours memory safety is extremely important. C++ is not safe, and we still see tons of memory safety issues, many security-sensitive, in practice, despite using modern C++ for all new code.

Even if safety isn't as important to you, there are other reasons you might be interested in Rust: a module system, pattern matching, a standard library which offers better performance than STL for many tasks, ADTs, concepts, a package manager, etc.