My husband died twenty or so years ago, in his 50s, of aggressive prostate cancer. There was little awareness then, and he had no idea what his symptoms were indicating and, due to his lifestyle, delayed consulting his GP. Earlier diagnosis, even by months, may have saved his life. Before his death he helped raise awareness by speaking publicly about the disease. Since Prostate Cancer UK was set up in 1996 (I think) there has been growing public awareness, increased funding for research and more treatments available (though it remains a postcode lottery).
Urological Consultants have spent much of their free time supporting prostate cancer awareness and raising funds for research that definitely has made a difference to men now diagnosed with cancer.
It remains that PSA screening is not reliable, as someone mentioned above, her husband has a false negative, this isn't uncommon, not are false positives. Many men have non aggressive cancer which does not require treatment, just monitoring, but they may live less stressful lives not knowing they have cancer at all. A hard dilemma to consider.
Any male with a close relative that had prostate cancer should ask for screening from aged 50. Black men are also at higher risk (as are some Jews).
Living with prostate cancer (and various other prostate conditions) is challenging, on hormone therapy (which he hated but it kept him alive) my husband looked younger, healthier and fitter than he had for years - it certainly didn't reflect how he felt and the pain he was in.
Apologies for long post, it's close to my heart.