I think your post brings up an interesting and relevant question about
healthcare. It does seem that many primary care physicians aren't as assertive in pursuing prostate cancer beyond 'watchful waiting' after a cutoff age of 70.
As you say, you are fit and there is no reason why PC should not be diligently monitored, followed up, and treated. We have other over-70 members here who have been assertive about their own medical care, which I think we must be at any age.
And at younger ages, I think that PSA testing should begin for all at age 40, as recommended by some prostate cancer experts. Then if the value is higher than expected, it should be monitored every year. If low, testing can be done every 5 years until 50, when annual testing should be established. Those with a history of prostate cancer in their family--father, brothers--or African ethnicity should be tested annually
beginning at age 40.
My two pennyworth on the subject....Tim