I actually seriously want to hear about good use cases. So far I haven't found anything: either I don't trust the agent with the access because too many things can go wrong, or the process is too tailored to humans and I don't trust it to be able to habdle it.

For example, finding an available plumber. Currently involves Googling and then calling them one by one. Usually takes 15-20 calls before I can find one that has availability.