That's what an article on The Telegraph says
http://www.telegraph.co.uk/men/thinking-man/10631776/Why-do-men-cling-to-the-music-they-grew-up-with.html
http://www.telegraph.co.uk/men/thinking-man/10631776/Why-do-men-cling-to-the-music-they-grew-up-with.html
Executive summary: You listen to pop music in your salad days because it's about the NOW. As you grow up your taste in movies, books and many other things changes but you get stuck in a musical rut. And men are more obviously stuck in a rut and like lists and competing over trivia.Many of my friends – all in their forties – still listen to the pop music they grew up with. A particularly powerful form of nostalgia comes into play.
”Pop music reminds you of the best time in your life,” says Jon Tregenna, 51, publican, Buzzcocks fan and occasional lead-singer with a non-professional rock band.
“It's like your first kiss. It's from before you became fat, asthmatic, compromised by work and other responsibilities, when you pogo-ed to The Damned and kissed a random girl in the mosh-pit. Is there anything better? Why would you want to forget it?"