Honestly it’s a nice break sometimes. People suck.
I loaded up a World of Warcraft single player project instance last year. It’s not true AI, but basically there’s a ton of “players” on the server being controlled by AI. They even crack jokes or give each other a hard time in chat. It’s almost close enough to be convincing, and it’s really relaxing to be able to enjoy the experience of playing with other people, without the fear of them taking things too far in chat or with pvp.
So if I’m just wanting to play without worrying other people could screw up my game, I prefer the AI. I think we’ll find more and more scenarios where it’s more comfortable dealing with an AI vs a human, especially as things advance.