Nah, it doesn't mean you're getting old, it means you know better.
I listen to a lot of stuff (prog, blues, jazz, metal, pop) and most of today's mainstream music is trash, pointless lyrics, talentless singers (except lady gaga, she's an amazing singer, but she's also a special phenomenon).
And that's mainly because of the way the music industry works, they don't want musicians with talent and visions, because they can't control them, when you have someone like Justin Bieber, who sings well, but nothing outside of this... he's a tool for the industry, they'll use him and throw him in the trash, because they want to be the ones who constantly control what pepole hear, a label company wouldn't like a top selling musician signing with another label.
And that's why lady gaga's different, she worked her ass off and cracked the system, she isn't a tool made by the music companies, and I hope that she'll make more varied music now that she has a wide and enthusiastic audience.