No, I was replying to imtringued.

But to answer your question, I reach for a low-level language when I need the one and only thing low-level languages are designed to do best, which is give me full and precise control over the hardware. In those situations, Rust offers little safety in the interesting/subtle/critical code, and for me it even makes things worse. It helps with the simple uninteresting code. So it's not a matter of quantity but of quality.

Of course, if the tricky parts of the program don't require precise control over the hardware, I don't use a low-level language in the first place. For example, if I'm going to let the language manage memory for me, why suffer the high overhead of heap memory management in the Rust/C runtime when the Java runtime offers me lower overhead?