Lee, I can explain the contradiction as it applies to me, I suspect others can relate.
I like diapers, but when they don't perform properly when I NEED them to, I can find myself grumbling about them. Leaks can be a real bummer, especially if I'm on my way to a meeting for my business. It's hard to show up and have to carry a backpack into the washroom of a customer's house, locking yourself in the bathroom for a seemingly loooooooooonnnnngggg time (really only 3-4 minutes) to change and get cleaned up.
Or, getting out the door heading out somewhere, literally 5 minutes in a new diaper, and you end up wetting it thoroughly.
Additionally I often worry about someone finding out that I wear diapers and giving me a hard time over it, or worse, judging me without confronting me and giving me an opportunity to explain. Incontinence gives social license to wearing diapers, but it doesn't make life easier by any means.