[hobofan]

Same reason you'd use any other IntelliJ IDE: Most things just work out of the box without having to install and configure dozens of plugins.

Admittedly, for Rust the gap isn't as big as with other languages, as RA is an excellent language server, but with CLion + Rust you get pretty great debugging support.

[lostmsu]

I found VSCode + analyzer + native Windows debugger to provide better feel for Rust debugging.