I'm not sure why Neil Diamond does not play concerts in Nashville no more. I think Neil Diamond can answer that question for you, as it's a popular music destination for all sorts of artists!
Neil Diamond used to play concerts in Nashville. He played the Ryman in 1996 to promote Tennesee Moon and in 2005 he played Gaylord Entertainment Center now know as Bridgestone Arena and after that he did not play anymore concerts in Nashville?