A.I., at this moment in time, is incapable of writing as well as a skilled author.
Using AI to help write? The short answer is, I don't.
There is a person, Tim Boucher, who has used AI to write at least 97 books.
That's impressive, but I would wager that if I got into reading one of them, it would be an intolerable slog that I wouldn't be able to get through.
That is because of my observations when I've experimented with getting AI to generate some fiction. Everything it writes is very hackneyed, very trite material. Everything always ends up positive, everyone is happy, there is little conflict or conflict resolution, and every character has the exact same voice.
I like my fiction to have current colloquial expressions, AI doesn't do that. I like to have little plot twists here and there, AI doesn't seem capable. When possible, I like to have my chapters end with a mike-drop sentence. AI hasn't been able to generate one of those.
I'm over 75% finished with my political-thriller / science-fiction novel, so I'm starting to think about leveraging AI to produce a book cover or promotional images and video shorts. Even there, the creativity seems constrained. You can readily identify images created by AI, they all have a certain subjective feel to them.
However, there is a place for automation. It isn't AI, exactly, but automated grammar and punctuation error-checking is a stellar function. It's caught a lot of my minor errors. Even then, sometimes, I'll take artistic license to have characters speak with a more 'real-life' tone, or to describe a circumstance with more punch.
I don't doubt that A.I. will improve and that its' writing will be good someday. However, perhaps you have seen hand-crafted products for sale on eBay or Amazon? A lot of people prefer them over factory-created items. It may well be the same for works of fiction.
There may come a time when there is enough of a backlash against A.I. generated product that a large segment of people will prefer writing that has been produced by humans, not machines.
Happy writing, my fellow authors!
Artificial intelligence is not a substitute for human intelligence; it is a tool to amplify human creativity and ingenuity.