As for me I like to wear and use them from time to time. I think it is a security thing. I have a bought of wearing diapers when I am feeling lonely, defeated, depressed. It allows me to feel secure and safe.
Perhaps this is a feeling I get because I need my mommy and it just helps, perhaps I am just weird, I don't care either way, when I get the graving to wear a diaper I go to the closet and pull one out. SELF EXPRESSION combined with SELF GRATIFICATION. If just feels so good from the inside out. :) NO PUN INTENDED :)