Instinct. I think it drives UX. When I am designing an interface, I'm not just parroting something I've seen before. I am calling upon the breadth of my human existence, my professional experience, my empathy, to think about how another human will be using the applications that I create. It paints everything I touch.
LLM will never be able to do that. It can clone things that humans have created in the past but it can't create novel solutions that a human will enjoy without a human at the wheel iterating through prompts until it's great. AGI doesn't mean 'good enough' to me. It means better.
The same goes for another human being though. What you experience and want to visualize need to be described. Whether its a human or AI, you will have the same issues.
