There is a huge list: Hank williams, Townes Van Zandt, Charlie Pride, George Jones, Waylon Jennings, Don Williams, Hank Jr. Steve Earl, and that's the short list.
I have no faith in human perfectability. I think that human exertion will have no appreciable effect upon humanity. Man is now only more active - not more happy - nor more wise, than he was 6000 years ago.
Edgar Allan Poe
