Not only that, you get any album or movie you want, in the format you want to use, with the bitrate that you need. For example, there are versions of tv/anime series optimised for PMPs, or HD versions of movies and so on. Also, about 80% of the stuff available through piracy is not available at equal ease from online sources or offline distributors.
Not advocating piracy here, just saying that the distributors should get their act together. If only say * Music has an online catalogue of all their albums, downloadable in .ogg, .flac .mp3 encoded at 128 kb bitrate or VBR .mp3 format, when you need it, but paying only once for an album, or for every download.... however. Sort of like iTunes, but without the DRM and with more encoding options, and not tied in to a single player.