Adding to the confusion

My friend recently asked me what I find in the music I like to listen to, which consists of Classic Rock and Classic 80's. He asked what kind of lyrics I look for and what kind of emotions the tune evokes and why I only listen to classic rock and classic 80's. After he asked me that, I realized I couldn't answer him. Even though I've listened to classic rock for years I still don't know what it is about it that I enjoy. Sure, Credence Clearwater Revival makes me smile, Pink Floyd makes me feel pumped, and The Rolling Stones can provide a catchy tune, but I still can't figure out what it is that I like about it all. I thought I'd be more prepared for a question like that.

My friend simply loves his Hip-Hop and his Rap, he'll tell me endlessly about the artistry and the feelings and the experiences of the artists, especially Eminem. I hear plenty of hip-hop but I never really got into it. I couldn't name any particular artists or songs off the top of my head. It's just good to listen to once in a while. But I still can't help feeling humbled and confused by his question.

Deviants, what say you? What is it about your favourite music that draws you to it? Is classic rock just all about sex and drugs and alcohol? Is rap and hip hop just all about hate and politics and partying? How do you discover the reason why you listen to the music you do?