For those who grew up in those years, it is not only a flashback of all the good old past, the sweet and bitter memories, but a pure, sincere and truthful time for love, friendship ...or just any relationship.
I was told that those who lack certain vitamins or minerals would crave for certain food; and if you lack sincerity, truthfullness and innocence, you would crave for every detail of the movie...
And I cherish every moment of these above movies.