As a writer myself I know what you mean, but have found some limited uses for it.
I have a fairly big printer (Plotter) so AI does a really nice job of taking a smaller sized photo and then scaling it up without any distortion even in poster sized pictures. It's kind of nice now to be able to take a thumbnail image and print it out at 3 feet by 5 feet and have it look good.
The other thing I like is that in the United States anyway, the Supreme Court ruled AI Images are not able to be copyrighted, so I can use AI pictures for book covers and not have to worry about models, model releases, etc, and later being sued.
Like @Mr. X but a little different, we just bought another house and wanted to see what the place would look like differently. Since we were swapping rooms, as in the kitchen being the living room and vice versa, it was nice to take pictures of the rooms then just make it a kitchen based on different kitchen styles of architecture. It was just Mr X did, but with rooms, and it was nice to see what we ultimately envisioned.