I don't ever need/want to unsubscribe due to being the bug contact or the assignee, no. I can't speak for anyone else, but it seems to me like an unusual thing to want, and bug contacts / assignees should be more capable of using filtering and generally dealing with large amounts of mail than ordinary users filing bugs are expected to be.
-- "Also notified" makes difficult to unsubscribe https://launchpad.net/bugs/48860 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
