I know he's not machine, but you clearly can't be sure that his only option in his mind is to go out today or tomorrow.
He is one of the best athletes in the world, and if you say that he can't deal with it physically and mentally at this age, what would you say about Tommy back in 2009? Who had tremendous run at RG losing to Fed in 1/16, won Halle and then lost to Fed in semis at Wimbly being 32 years old.....