Welcome to the site. I don't know much about your fetish but I'm sure there are people here that do.
It's more common than most people think. There are two types of diaper fetishes. There are Diaper Lovers like myself, who simply enjoy wearing a diaper. They enjoy the comfort and for most of us it is a sexual stimulant for us. Most use their diapers for their intended purpose, I myself only wet and very very rarely mess myself. Then there are Adult Babies, who not only want to wear diapers, but actually regress back to a baby or toddler and be completely dependent on someone to feed them bottles, change them, bathe them, in some cases breast feed them, basically provide them with all the care an actual infant or toddler would need. They even make Baby Clothes for Adults which can be purchased on line from many companies who cater to the AB/DL lifestyle as it is more commonly referred to. Others prefer to play the Mommy or Daddy role and care for Adult Babies. I just enjoy diapers. I have had a desire to wear them since I was very very young, and I have heard the same from many others that share my fetish.