What about for remembering lost loved ones? There are dead people I would love to hear talk again, even if I know it's not their personality talking just their voice (and who knows, maybe with LLM training on a single person it could even be roughly their personality, too).

I can imagine a fairly big market of both people setting it up before they die, with maybe a whole load of written content and a schedule of when to have it read in future, and people who've just lost someone, and want to recreate their voice to help remember it.