I think he's fed up with the TT because of the circus that goes with it and I think it could be argued that if Joey and one or two others were still with us they would be of the same opinion. If he does win a TT well good for him but even if he doesn't he has still been one of the best road racers ever who has won on the majority of road circuits unlike another TT winner who tends to only ever win at the TT.