> I love the feeling of uncovering the little pieces of story and wondering if I've got it all and how much more there is

To me, this is great too, and it's why I still enjoy reading fiction.

However, having conversational NPCs which can behave in complex ways isn't just about a story any longer, it's about a more accurate simulation. I want to see where the non-deterministic machine(s) can take me. I want to poke and prod and discover new mechanisms. I want to make my own story.

Once I was quite religious. I was discouraged from reading fiction by elders because they said it is a "waste of time" and "basically lies". In this way, whether it was written by a human or a machine is irrelevant if I can't tell the difference. I would have a qualitatively different response if I knew whether a human or bot wrote it, but in the long run I'm not sure it matters in cases where I don't know.