Ask HN: What are you using loop engineering for?

Since the introduction of "loop engineering" a few months ago several widely used coding agents have been equipped with some sort of /loop primitive, however I haven't found a single good use case for it in my daily work. Maybe my day-to-day is not adapted to this paradigm, or maybe I'm not approaching problems with the right angle, or maybe loop engineering is not actually useful in practice, I have no idea. Anyone would care to enlighten me with their own personal experience on this topic?