I like the imagery of the "carcass picked clean."  Although I haven't had that reaction to Sgt. Peppers, I have with other albums and songs (Stairway to Heaven, anyone?).  It's one of those things that is generally understood and yet not often discussed.

I remember as a teenager feeling annoyed that people would be attracted to a new song, play it absolutely to death, and then move on three months later.  Music always seemed more precious to me . . . something to be savored and treated with some sense of loyalty. 

I'm cringing as I remember my sister having a thing for Buddy Holly and one day playing one of his songs about 30 times in a row.  I about lost my mind that day.