The point is that a lot of people also have posters,fanart,subs and sometimes extras in the same movie folder. Why? Because they belong there with the same movie. it would be absolutely stupid to have all the movies in one folder along with all those files. Well, at least I think that would be stupid, hell it would be a nightmare. Most people use plex or emby nowadays which makes use of posters and fanart. In the old days I used DLNA serves on the ps3 or even my tv, but that would just give me a folder structure. If you're still using that then I would understand your point, because then you'd have to navigate a lot of folders and have no use for those extra files, but most people have moved on to better solutions.