Your oncologist is technically correct, eventually..The question is when…?
It may be helpful to this group if you add your clinical history, diagnosis – is this a recurrence or were you diagnosed with metastatic disease – was it in lymph n nodes only, is it in your bones, organs…, Gleason Score, PSA doubling and velocity times, when you started treatment, your age, overall health status…
I would consider reading the NCCN PCa patient guidelines. Those will give you a starting point on what the urology, radiation and oncology communities agree as to the standard of care for PCa.
Do some research on intermittent ADT, if it is something you and your medical team is an option for you, that may extend the time to resistance to ADT.
The way ahead depends on the progression and clinical data associated with your specific PCa – is it high risk, GS 8 or above, are your PSA doubling and velocity times fast, how long have you been on ADT, how ow is your T while on ADT, less than 20 is best…
There may be a number of treatment choices ahead and you and your medical team will have to decide, Provenge, Xtandi, Taxotere, Jetvana, Radium 223.
Your posts indicates your PCa is under control, try and relax, live, do your research, talk with your medical team. There are so many new and emerging treatments that PCa may become like diabetes and AIDS, a chronic disease that is managed through combination therapies that are constantly updating.
Here's one link: