He isn't a quiter, he's not getting any younger.
He has beet cancer, won 7 times (a record ether way ).
He owns a Gulf Streams privet jet and many many "Man Toy's" .
I think this is his way of retiring with out the tagged in his mind as "quiting" .
He will be a legend ether way. As a disease fighter myself, retiring is the same as quiting.
Sorry but true. Something a healthy person can no way, no how understand.