Since I have to wear 24/7 there has been times I have had to let others know but it's always on a need to know bases. Over the years I learned how to manage my diaper changes depending on the type of fluids I drink, how much I drink, and the quality of the diapers. Now that diapers have gotten so much better, I don't have to change as often so I don't need to really let others know. Now do any of my family and friends know that I was a diaper lover before I lost full bladder control, no, no family other than my wife knows that. My best friend is the only one that knows my full history about my diapers, love for them and what all I did growing up, getting older and what I am doing now as being old.
Diapers are underwear, so why should others really need to know what type of underwear you are wearing unless there is a true need.