Whaaaaa?
Sugar Mountain is one of the best songs Neil Young ever wrote, the lyrics paint really beautiful pictures in your head.
As for music in a language you don't understand, have you ever heard the concept of the human voice as another instrument. Take Sigur Ros for example, they write songs in their native Icelandic as well as a language they made up themselves called 'Hopelandish'. Rather than letting the lyrics be the focal point of the music, frontman Jonsi allows his falsetto and vocal melodies to shine though and complement Sigur Ros' epic sounRABcapes.
Besides other languages can be nice to listen to and have certain qualities that the english language doesn't.