system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do we still use propeller planes in the Air Force?

What benefits do turboprops have over jets for large planes, for example the C-130?

I would think that there's no reason for using them except that they haven't been fazed out yet, is that the only case?
gpt
Turboprop engines are far more fuel efficient than jet engines, and more reliable in unimproved areas with lots of dust, sand, grass, and rocks. So they are the engine of choice in applications where speed is not valued, but reliability and cost per mile is highly valued.