Mel, I've been following this thread, and have finally decided to add my two cents.
First, I completely understand your feelings regarding your son and prostate cancer. My son just turned 42, and I talked him into getting a PSA test last year during his annual physical. Happily, his numbers were extremely low, and we all felt good about that. Knowing, as usual, trumped ignorance. I would always rather know something than live my life in happy ignorance.
But the other thing I find interesting is the absence of comment in this thread by those who make the PSA test out to be something akin to an instrument of the devil. Where are the usual comments about the horrors of over-diagnosis and overtreatment? Where's the insistence that you spend several hours educating him on the role of the prostate gland, the dangers of the PSA test, the terrible side effects to which he's potentially exposing himself if he consents to the test? I'm not seeing any of that.
So, I find myself wondering, are the folks who are so opposed to PSA testing quiet because we're now dealing with an actual individual, a guy with a name, Mel's son, someone we might actually know, rather than the nameless masses?
I personally would have no problem waiting until he's 40 for that first PSA baseline test, but whether he does it now or then, I hope he has it done and monitors it at appropriate intervals as he grows older. That's certainly the smart thing to do.
Here's hoping he never has to fight this battle. Good luck to both of you.