There is a tendency for some adults and some teenagers to see newer material in a medium (be it music, film, animation, or comic books) as inferior to the older classics that they knew in their youth.

There are many causes for this. First, people's tastes are generally based on the art they knew as they grew up, and they continue to inform themselves on this basis. This is especially problematic when Values Dissonance comes into play: Modern day art (be it music, film, television, etc.) may positively depict contemporary societal norms and developments that would have been frowned on when you were growing up. Second, tastes can refine or limit as one ages; what may have seemed brilliant to a child or teen would seem crude or laughable to most adults, but the memories of how great something from one's youth seemed to linger long afterward, making the familiar examples seem better than more or less equivalent modern ones in comparison. Third, change in most art forms comes in waves, rather than developing continuously, and the transition from one wave to another can be jarring and unfamiliar — while the periods between waves tend to be uninspired across the board.