Apple F’ed Up iTunes AGAIN

Why does Apple redesign the interface for iTunes every version? Every time I have to hunt around the internet to figure out how to make it look like it looked before. I knew how to use it, now I don’t. The playlists bar to the left if the list of tunes is gone AGAIN, and this time I can’t find a setting to get it back.

Why does Apple keep doing this stuff to its users?