A lot of men die with prostate cancer, because only very few die from it. And if you belong to the former group, knowing about it or doing any kind of intervention means a massive loss in quality of life. So the best course of action overall is to close our eyes and stop looking. And hope you don't belong to the latter group.
Perhaps this plan just needs better marketing. Instead of dividing tumors into benign and malignant we could have a third category for malignant but slow-growing.
If there was a simple cure for it once detected, we could screen and test everyone all the time.