Do lyrics pollute a song?

The other day somebody asked me why I don't have lyrics to any of my songs. I told the person that I just have not thought of any. Sometimes I think Lyrics can pollute a song as much as they can make a song better . I think a song is more than just the lyrics.A song is more than just lyrics it is a feeling. It is the way the sounds flow through your ears, signals your mind, and sends chills down your spine.
I also think that everybody has there own listening experience. For me a listening experience is when I hear a song and try to think of something. I try to think of a scene in my life, or a scene that i wish would happen to me an try to play this mini motion picture or a music video of some sort in my mind. When I combine these two things it sends a chill down my spine.

If you are wondering I am listening to Explosions in the Sky and the album is called "The Earth is Not a Cold Dead Place".
I also highly recommended listening to this album, it will put you in a state of relaxation and deep thought.