A burned CD just isn't anywhere close to having the full artwork and liner notes IMO.
+1. And I buy CDs because I still believe in the concept of an album (that being a collection of songs, regardless of format, that the artist felt should go together for whatever reason). So I still listen to CDs all the way through, every song.
I suppose I could create playlists on the iPod to keep the songs in order, but it's not the same. Anyway, it's still cheaper (most of the time) just to buy the CD rather than download all of the songs.
I'll purchase the occasional MP3, though, if I don't want the whole album.