I use it for illustrations of characters, items, and locations for my homebrew TTRPG campaign. That's basically exactly what happens: party looks at it once, gets a general idea, and usually never looks at it again. Without AI, I just wouldn't have the illustrations; I'm not commissioning art that's going to get looked at once.
I wouldn't call that "art", in any real sense. They're visual aids, not aesthetic masterpieces.