Quality of life is important of course. That said, part of that quality is knowing that the cancer is sleeping or being treated to not cause more harm. With T3b the potential for spread is high if not being treated. Radiation is one tool for sure and hopefully keeps the beast at bay.
The PC elephant in the room for me is the awareness that the PC was happily traveling to distant places and even though I would enjoy the benefits of testosterone, my worry for Mets would always be lingering. For that reason I opted for ADT and getting accustomed to the SE's.