One of the problems with prostate cancer is that is generally asymptomatic. By the time symptoms develop, it can be too late for treatment.

What kind of symptoms do non-testers think they will get before the cancer has progressed beyond normal treatment?

I had a very aggressive cancer with a lot of peripheral damage, yet no symptoms at all. In fact, my cancer returned aggressively 6 years later, again with no symptoms.

Who wants to risk no testing until they ejaculate blood or have no ejaculate at all? Or, even worse, starts having back or hip pain through metastases? If that happens, your treatment has gone way beyond normal prostate cancer treatment.