I am pretty sure if someone designed their life using AI prompts and followed them, they would get a far better result than they would get from doing whatever they are doing at the moment.

Interesting idea. We might think that we were prisoners of something external that “forced” us to do something. But it's not like that. It would be like a coach, tailor-made for us, guiding us through the process of getting to our goal(s) more efficiently. But it's like you say. We look for what takes the least time to achieve. And we don't look at the process as something that will add even more value to the goal itself