I recently published Mortal, a novella-length My Little Pony fanfiction meant to introduce anti-death concepts to an unfamiliar audience. Short description:
Twilight Sparkle's friends have lived long and happy lives. Now their time is coming to an end, but Rainbow Dash, at least, will not go gently. Twilight has the power to save her friend's life. Is it worth violating the natural order?
This is a character-driven melodrama. It's not particularly rationalist, but it's very, very transhumanist. Unlike, say, Friendship is Optimal, I wouldn't necessarily recommend this one to people who don't already know the source. It assumes familiarity with the characters and the world.
I am going to talk about how I put together the story and how people reacted to it. This will contain spoilers.
This line exists so you can break out of the automatic "read everything on the page" mode if you want to avoid the spoilers.
This story was structured as something of a bait-and-switch. I watched the reaction to a previous transhumanist horsefic (yes, there's more than one), and I was struck by how easily readers matched the explicitly anti-death narrative to the "immortality is a curse" trope. Rather than fight against this trend, I decided to work with it. The first act is meant to look like a story about learning to accept the inevitability of death. Starting in chapter 3, I break further and further away from that mold until the protagonists finally rebel against the status quo.
The first chapters got a lot of people invested who I suspect would've been turned off by a less familiar opening. Once I was into the third act, I stopped being subtle and used every trick in the book to make the pro-death characters look like the unreasonable ones. Judging by the comments, there's no shortage of readers who were angry at having their expectations flouted, but quite a few seem thoughtful, and some explicitly changed their mind on the subject.
I started reading and realised I didn't understand a lot of the things that were going on so I went back and finished season 3 which I had stopped following about midway through. I now realise that that probably wasn't necessary, and I could have read it with just the context of knowing that Twilight go turned into an alicorn, since all the other references were mostly events made up by the author or from season 1 and 2.
The comments were predictably deathist when lesswrongers get taken out of the picture, although it does appear that fiction like this works in some direction of changing people's minds. At the same time it gave people an opportunity to restate in public deathist memes as their personal philosophy which might not be so positive, considering that would help to cement it in their minds as part of their identity that they are the kind of person to hold these positions or something like that.
Some factors would have been nice to explore more fully, like the response to Celestia & Co.'s argument, and to allow for some more back and forth. I think it would have been possible to more strongly steelman the deathist arguments. Celestia also comes off as less competent in general than I would have expected of her. The progress of the alicorn community was good to show though, and more of that would have been good also.
I still enjoyed it quite a bit. I wonder why MLP is such a common target for having fanfiction centred around these topics written and links to them posted on this site?
Demographics. Fans of LW and fans of MLP both tend to be males ages 18-35 who spend a lot of time on the internet.