I have had many bad pasts, where i was sexually abused when i was 4 years old, and it seems this has affected how i behave, I have many strange fetishes which include wearing diapers, sucking on pacifiers and sleeping with a plushy at night. Its like my inner child is so strong at affects how i act irl, and behind closed doors i wear diapers and act like a baby. To me i feel im wierd because of this but im still wondering whether its normal considering the bad past i have experienced.
As to what percentage of them were abused, versus how many of them just developed the fetish randomly, I don't know. But there are people out there, and I'm sure a little time online will help you find people that you can talk to about it.
~Peace~