Re Kenny Rogers; he is going to "retire" to spend time with his family. Nowt on ill health. And, s'cuse the cynicism, but I guess that leaves open the odd, one-off, "I couldn't say no" television special or gig.
Guardian story: http://www.theguardi...next-world-tour
This is very much he is stopping touring which in some ways may actually push his death further into the future. I do not think he will stop recording or performing.