I have two major use cases :
- Let everyone know that action has been taken following inappropriate behavior, and so prevent others from having the same behaviour
- Inform other members that they should not expect any answer from the banned user either on public discussions, in PMs or anywhere else (classifieds).
I tend to agree with @Chippy365 here, we have a reasonable request, and you come telling us we shouldn't have it, maybe we should just consider that we may manage our communities differently than you. I don't drink coke, i don't go tell people who do that it is a useless and disgusting beverage...