I suppose the use case is the same for any time you would want to delete
anything else in any situation. Not being able to delete something
easily means that you can't proactively clean up things that are no
longer used.It also makes it harder to change existing rules. What if
you have an audience that looks for an attribute to be present. Then,
later, you want to delete that attribute in some situations so that it
is no longer present for certain users. You can't do that. You would
either have ...