I nominate this study as the dumbest piece of music-related scientific research of the last five years. From The Telegraph:
For example, teenagers use “intense” music such as punk and metal to establish their identity, but as their lifestyles change, so do their music choices. As they move into early adulthood, interest in intense music decreases and a preference for “contemporary” music such as pop and rap rises.
Keep reading–if you think you need to. A better read might be this National Post article on how all rock eventually ends up as classic rock of some sort.