Ah, when you said "private" I thought you meant something that wouldn't be shared with anyone (e.g. a personal diary).
You're right that some other solution would be better for "private but shared" content (although it would likely be tricky w.r.t. both security and psychological/social aspects like getting people to follow good practices to prevent leaks).
You're right that some other solution would be better for "private but shared" content (although it would likely be tricky w.r.t. both security and psychological/social aspects like getting people to follow good practices to prevent leaks).