One factor present in the most recent generations that you have noticed is an undoubtedly growing hunger for the sense of nostalgia, seizing an important events occurring in an idealized period of their lives, such as a long series of films or flavors that marked the tender age of first childhood, or onset of puberty, and in the most extreme cases one may note feelings of contempt and deprecation to cultural manifestations that distance themselves from their almost feverish dream, given the duration of the desired period; It is not necessary to do a deeper analysis to note as reasons for such an emotional attachment to the infamous "Pop Culture" but perhaps explanations to be of great help and understanding of such phenomenon.
I bring as a complement and suggestion of reading in the graduation work belonging to Júlia Nogueira, from Rio Grande do Sul, where she is treated more accurately. Nostalgia as a trend of behavior among the young generation Y