I think one of saddest things I've seen are full grown adults trying to squeeze into baby diapers. I saw on some posts where people said that they have a 32" waist and can get into a size 6 baby diaper. Not toddler or baby I know has a waist that big. I know diapers are stretchy and have give, but come on now. Why try to squeeze into a baby diaper when they make adult diapers that will actually fit? There's also the issue of absorbance. The quantity of waste matter coming out of an adult is much larger than what comes out of a baby. Can't imagine a baby diaper would hold that. I know some people wear baby diapers because it makes them feel more babyish due to maybe the designs on the diapers. But there's adult diapers out there that have babyish designs too. And if you have particular design you like, you can have printed on diaper tape. So I am really seeing the reasoning for a full grown adult putting on a baby diaper.