As
@Eclectic said many people use AB as a coping tool for medical issues.
I'm bladder incontinent from neurological issues.
Caused by a SCI from a ruptured disc in my cervical spine (neck) .
Wearing diapers became a major must 24/7 for me.
I not only I wear diapers but I also use a bottle to drink from, also I use a pacifier which helps tremendously with stress relief.
Also my primary care Dr suspects I'm on the autism/Asperger's spectrum. I did read that some autistic and Asperger's people actually use pacifiers .
Also pacifiers are sold on websites that sell stim products for the ASD community.