Please tell me WHY???

I'm supposed to be finishing my grading, eating my lunch and getting ready to go to Staff Development, but I've got something on my mind that is eager for an audience. I need answers! I've been sitting at my desk all morning grading papers and listening to the radio.(100.3 to be exact.) I'm trying to understand why the prevalent theme in music written and performed by African American males is sex- how they do it, why they do it, and what they do it with. Is this really necessary? What happened to the days where sex was a private matter that didn't need to be discussed with the entire world? It's not surprising that many young people who listen to this music think that this is what being an adult is about. OMG! Another one just came on called "BEDROCK" of all things, and they're not talking about the Flintstones!!! This is killing me! Why can't we find other, more intelligent, socially conscious things to talk about? What ever happened to Marvin Gaye's "What's Goin On" or the O'Jays, or even sweet love songs? It's not about love anymore...it's about sex. How can we expect girls to act like young ladies and boys to act like gentlemen if almost everything they see and hear is to the contrary? Someone please give me a little more insight? Where did we go wrong?