One benefit from the user's side that I've experienced is that, when debugging, I can go as far into the call stack as I want or need, using the same tools I us

One benefit from the user's side that I've experienced is that, when debugging, I can go as far into the call stack as I want or need, using the same tools I use to inspect my own Julia code and read things in the same language throughout - no jarring context switch. This helps significantly with building a complete mental model of what you're debugging, and with ruling out a whole class of potential issues at or beyond the language border.