Agreed -- get it changed. It's in bad enough shape it will take the chain down pretty quick, and, at the same time, the rear sprocket.
"Here is your country. Cherish these natural wonders, cherish the natural resources, cherish the history and romance as a sacred heritage, for your children and your children's children. Do not let selfish men or greedy interests skin your country of its beauty, its riches or its romance.” T.R.