Not hating on your style of music or anything, but I seem to have the opposite opinion. I just love underground hip-hop, and rock. Not to mention bands like sublime were post 70's and many people consider them one of the best bands of all time. It just depends on a mixture of what kind of instruments you liked topped with what style of lyrics.

For example: for me, I have no problem listening to a song if its just for fun, just a party song, talking about smoking and having a good time with buddies.

I know a lot of people however who hate music like that, and they prefer more lyrical depth or different styles of music, it just depends.