Why is the question about clothes? Why not ask why ghosts usually appear wearing skin? Or flesh? I guess these days in common depictions, clothes > skeleton > p

Why is the question about clothes? Why not ask why ghosts usually appear wearing skin? Or flesh? I guess these days in common depictions, clothes > skeleton > peeled > nude in terms of frequency. And what about age, or state of injury? It seems more commonly reported that ghosts do not exhibit their fatal injuries, though again it "happens". Or the big question: why should anything be visible at all? If a ghost is meant to be associated with a spirit or soul, there's no particular reason for them to have any form or be visible at all. But as an exercise in worldbuilding, they can be, and their visual appearance can give all kinds of fascinating clues about their previous existence or the viewers'. I'd rather speculate about that.