I'm pretty sure the OP isn't asking if we're now ashamed of music we liked when we were kids....not even sure he's talking specifically about music. We're all adults now and are mature enough to realise that you don't have to be ashamed of anything you like/liked.

Growing up it's different! I went to an all boys comprehensive and I hung out with the fairly cool footballing crowd. When I was around 14 If I had told them I liked the song Dancing Queen or the show Ed, Edd and Eddy I would probably have had the piss taken out of me.

Obviously now I rock out to Dancing Queen in the clubs like I am the Dancing Queen.