Hiya Sam (I remember you from alt.sex.spanking back in the day where I liked reading your stories),
I'm unclear if you're familiar with
FetLife? The
Daddy Dom/babygirl group alone has over 53k members where discussions of ageplay and little-ness dominate. There are hundreds of ageplay and little groups (mini-forums) at FetLife including roleplay, story-oriented groups, adoptions (personals), and various sub-groups (adult-diaper lovers, middles [preteens/teens], same-sex, location-specific, etc.). There are even a number of specifically non-sexual age-play groups.
There are, of course, forums for ageplay/littles outside of FetLife, including
A Little Understanding. There is a major abdl (adult baby diaper-lovers) forum that I can't remember right off hand (not my kink). And I'm happy to know that Guardian Island is back -- thanks
@Williejj!
Your post and the subsequent discussion also alludes to the question of ageplay vs. Little-ness.
Some would argue that ageplay is a form of roleplay or playing pretend while being a "little" is something someone just
is, i.e. a person younger than his or her chronological age. Discussions about regression, seeking the care they did or didn't get when they where children, how to handle the stress of being a grown-up when you really want to just watch the latest Disney movie with your teddy bear are all common among littles. I would respectfully disagree that everybody is like this. While it's true that we all have childlike elements to ourselves, experience nostalgia for our childhoods or long to be taken care of -- particularly during times of extreme stress, etc. -- littles differ in that they genuinely remain a child in some form or another. They engage in behavior that is not common among adults and must work hard to repress those parts of them when life requires them to be "big."
(FWIW, this is my first post to the forum! I didn't seen anyplace specifically for introductions so I decided to just jump in.

)