I think we're in the situation of "we don't know what it is yet". Of course, its permissionless nature is in and of itself a paramount use case for end users, because they effectively can't be de-platformed. However, this may be hard to apreciate for most end users though, never having had their account suspended.
But the somewhat unexpected benefit of permissionless-ness is the cambrian explosion of creativity being unleashed, with swathes of highly skilled people experimenting new ideas that this medium enables. True, a lot of it is rough around the edges, and most experiments will be abandoned because they won't find product-market fit. But #nostr feels so "fertile" that I'm convinced we'll get someplace(s) that will blow our socks off!
#grownostr