AI won’t be creating anything new anytime soon

It already has.

The “best” art tends to require a supporting story

ChatGPT can write that. Multi-modal models that combine text generation with audio and video are months away.

AI won’t be any better

Those claims have the tendency to not age well.

You don’t question your existence because other people are smarter or better at doing things, right?

Humans aren't that much better than me and not doing the things I want to do. AI on the other side will be much better than me, as well as do exactly what I want it to do and will be a click away.

And yeah, I had numerous experience were I would question my existence when playing around with ChatGPT or StableDiffusion. Neither of them is quite good enough yet, but they are very much on a trajectory where you can see that you have zero chance of competing with them in the future, or even getting remotely close.

The fact that we got them in the first place, not from humans doing centuries of research on art and language, but by simply by throwing huge amount of training data at AI algorithm, should be enough to question your existence.