Think of it this way: you spend time on a service to personally identify songs you love only to have that list filled with EVERY SINGLE TRACK from EVERY ALBUM you have saved. It becomes tedious to scroll through all of that to find the individual tracks you liked. If you want to see an album, you go to your saved albums. Sometimes its just a song you save from the albums and having to slog through every single track off of every album you've saved makes the user experience a lot more challenging.