There's many things about modern music that I don't like. For one, it seems to be more about the image than the music itself. However, hidden in the midst of pop culture (and sometimes disguised in it) are some decent stuff. For example, while Anggun's music is mostly programed pop music, she herself is a great singer with a very unique voice. I love the way she can phrase a line.
Anyways, music is unseparatable from culture, and a principle of culture is that it changes. Still, I believe it is VERY important to look at past cultures, including their music.