Unfortunately, the issue is a complex one, both in terms of screening (PSA), and treatment. It's not quite so simple as "everyone go get a PSA". Predicting the outcome in a given case is extremely difficult, and it's not helped by many of us docs, who think we know what's best in all cases.
Best advise is simply the old one: consider carefully the pros and cons of any proposed treatment, including "no treatment at all", and seek multiple medical opinions. Not internet forums.
Graham, MD