I've been wondering about this for a while, and think I have a reasonably-satisfactory explanation, but I'm curious what other people think.
I like diaper stories that have young main characters. I generally don't like stories that have adults as main characters. I do not like stories that have sexual content, nor do I read them with sexual motivations in mind (i.e. they're not "fap stories"). I don't even like overly-detailed descriptions of diaper changes. Think of Elizabeth's stories as an example of what I like, or Danielle and the Great Big Do-Over.
I feel like that's a little weird, especially since I'm generally more of a DL than AB, although since I've never really had an opportunity to express any AB side I do have, maybe this is my AB side expressing itself. Reading stories about underage characters for something that's at least vaguely a fetish (I don't want to split hairs about terminology here - that's why I say "at least vaguely") seems a little odd.
It's not really a problem reconciling it to myself - I like what I like and it's just a story. To be honest I have a bigger problem accepting that I like wearing diapers than accepting the types of stories I like. But how do you explain it to other people? I'll probably be telling my S.O. about AB/DL stuff soon, and I can see how my enjoying these types of stories might come up. I worry that someone not in the community already might get the wrong idea from the stories.
So how do you explain it to other people? Or what do non-ABDLs think of such stories? The best I've come up with is that it's kind of like a BDSM story that doesn't involve explicit consent. I haven't read many of those, but I doubt that an author would interrupt a scene to have the characters verbally consent and agree on a safeword, etc. Essentially it's a fantasy. Extending that to diaper stories, the motivation behind reading them is to enter a regressed state of mind/subspace/whatever you want to call it from the descriptions of what happens to the character.
If it's a regression thing, then a possible counterargument is to ask why write about characters who are 6-10 years old when most ABs seem to have a regression age of 1-3 or so? I think that's because two year olds aren't intellectually or emotionally advanced enough to be interesting to write about. A slightly older child can be mature enough to make the story somewhat plausible, or at least less implausible. Having the character be slightly older also adds a humiliation aspect to the diaper-wearing, which some people like, since wearing diapers at 2 or 3 is normal.
Perhaps this is why the story forum's here are now members-only.
Does anyone else feel the same way about stories? Does my explanation make sense, or is there some other explanation I'm missing?