Pinkie:hey pinkamena,like the diaper?

@Cgate
 
sometimes it’s just wearing it for the sexual thrill in a fetish sense, without anything else tied to child/baby/cub stuff.
 
Like how people get off wearing panties but don’t like to crossdress same concept
 
also those saying submissive, half the time that is true, but i am very dominate and enjoy wearing and feeling of it without the whole regression or acting young thing

Hah, I opened the thumbnail just to see if anyone was as annoyed with infantalized art as I was. Lets be intolerance buddies!

Cgeta, I believe it is a combination of an attraction to being submissive and humiliated, and a desire to be free of responsibility and to be nurtured. The former manifests as a sexual desire while the latter is more of a fun way to relax.
 
This wikipedia article will give you a bit more info: http://en.wikipedia.org/wiki/Paraphilic_infantilism

@Cgeta  
Yeah, humiliation is also a big one. “Sissy” (cross-dressing) is also common with diapers. Some also enjoy them for convenience (for obvious reasons) or comfort (commonly described as having a pillow to sit on wherever you go).

Oh, absolutely, Cgeta. Humiliation is one of the cornerstones of this fetish, whether just using diapers strictly as an integrated BDSM tool like entrophy described, or a larger roleplaying scenario centered around forced regression. The latter usually involves lots of baby paraphernalia to complete the fantasy (bottles, pacifiers, age-appropriate clothing). And yet for others, all those elements are just comfy, cosy, and cutesy. And still others find some cute stuff to be erotic without any of the attendant humiliation.
 
And I think humor is a fairly common element of bedroom antics as well.

Yeah, I see. Can humilation also play a role with in this?
 
My fetishes are kinda blurry as well. Only between erotic and humor.

Pinkie: Don’t you just love wearing diapers?! I do! They’re so comfy! And being able to pee when I want is so Great!  
Pinkamena: I hate wearing diapers…  
Pinkie Pie has 2 minds on everything it would seem.

Pretty much what Entrophy said. Bear in mind, it’s often not so clear cut a distinction between the erotic and the ‘innocent’ among individuals with this fetish. Stuff can get pretty blurry.
 
Regression can be foreplay or a substitute for sex or completely non-sexual. Some don’t regress at all and simply wear the diapers alone - either for the thrill or because they’re just plain cute.

Cgeta:  
Some wish to recapture the innocence of childhood and achieve it via infantile paraphernalia. Others enjoy the sense of powerlessness that comes with it, a common fetish (submissive). In the case of BDSM, they can be used as a chastity belt or to hold toys in place, as well, as remove the need to take a break for going to the bathroom (which would be a bit of a mood killer, I would imagine).

Cgeta
 
those who don’t have it will never know.

Pinkie has way too much fun forcing her evil mirror image to do stupid stuff.

I love how grumpy Pinkamena looks.

Hi, I’m curious.
 
What exactly is the appeal in the diaper fetish?