When making changes to a system setup, it’s easy to end up with unused lists that were replaced with updated or new lists. Old lists that proved to be in the wrong place or duplicates of other lists get ignored.
That is until you try to make a custom report and realize you have 5 very similar lists. Then, it would be GREAT to know which lists are used where and which lists were unused so you could save the back and forth and deactivate the unused lists. It’s too easy to have two similar lists for similar fields for different transactions or types and accidentally deactivate one you didn’t think was being used, only to find out it was being used elsewhere and you broke an existing data set and have to go digging through the deactivated wasteland to find it.
If you were the list that was sent to the Island of Misfit Lists, you’d be a little jilted when your user came looking for you and the information you’re still holding on to. Makes a list want to forget some things just to prove a point. Then you have to write an 80’s power ballad to get your list back.