I used to have strong desires to be incontinent, both bladder and bowel.
Those desires pretty much died a couple of months ago, and I have a reason to explain why.
I actually experienced a form of bowel incontinence that lasted for a couple of months, that I am still dealing with now (although it is getting better).
It was not all-out bowel incontinence, but there was a constant, heavy and very nasty seepage that happened several times a day. Many pairs of white underpants were completely ruined. I started wearing pullup protective underwear as a resort to the problem, and then I was always worrying if anybody around me noticed them. Whenever I went to work and the seepage started leaking into my pullup, my nerves got severely on edge. It felt even worse when it happened when I was dealing with customers at my job. Add in the fact that I could not always change when I had to (seeing as I kept everybody around me in the dark about what was going on with my body) - and that led to some nasty rashes.
Well, the doctor pinned down what the problem was. It was a combination of a couple of things in my case - due to my recent dietary changes and my decision to work out at the Y twice a day in an effort to live a more healthy lifestyle, I lost 20 lbs in less than two months, and my body did not know how to handle that. Add in the fact that I was contradicting the "healthy lifestyle" concept by engaging in binge drinking during the weekends, and that really screwed up my system. So, no more drinking alcohol, and add more calories to my diet, was the advice that the doctor gave to me.
The concept of incontinence made for a fun fantasy while I was thinking about it before this development. But I really don't want to wear diapers 24 / 7. I like my current lifestyle way too much for that. I think I will keep my diaper pleasures in the privacy of my apartment, only sharing them with those I trust enough. I don't want to spend all of my time worrying about whether or not people notice what I am wearing under my pants (which are now having a tendency to slide down quite often because of all of the weight I lost recently). I used to think it would be fun to lose control of my functions, but now I have realized that can be very far from the case.
So, consider my incontinence desires to be deader than dead. Often, fantasy is a lot more fun and exciting than the ugly reality.