I first went through this exercise at a young age, about the time I started kindergarten. Accidents at home were one thing, accidents at school were entirely different. I begged my mom to go back to diapers in my early years and she was not having any of it. The ideal thing at school would have been pull-ups like goodnights, but they did not have anything like that back then.
The pros and cons as an adult are a no brainer. Because of my urge IC, I simply would not be able to live the life I do without diapers. And, since I am very sensitive to medications, I don't have a foreign substance in my body causing another condition.
One last thing while I have your attention. Diapers are expensive. Insurance companies in the U.S. suck. You would think that someone who is profoundly IC could get a prescription and have diapers covered under insurance. Nope, not for most private insurance, not in my state. I realize that even if they did cover it, what they would give you is no better than a clump of tissue paper, but still this is a major problem folks.