Dear Fairwind:
I'll be happy to give you my perspective on your questions:
1. "Gold Standard". IMHO, surgery is still considered the "gold standard" mainly as an historical artifact and due to the perputuation of this persepctive by the fact that the most common "treaters" of PCa are urologists/surgeons. Let's face it, most of us get referred to urologists when PCa is suspected. And it's only natural that these doctors would suggest the treatment with which they are the most comfortable. We have a poster on this forum who is a physician (non-urologist) who opted for surgery for his PCa treatment. I recall that he once stated that he didn't even CONSIDER any other treatment but surgery! I think that might be indicative of the understandable bias that uro-surgeons have towards steering their patients to surgery. Forget about the monetary aspects...I think it's just natural for surgeons to want to provide their patients with surgery and have a vested interest in perpetuating the idea that surgery is the "gold standard". Couple this with the fact that surgery has been around a long time and many stuides are available to demonstrate its effectivenes. (there are also many long term studies that demonstrate the frequent onerous side effects).
Prostate cancer is one of the few cancers not routinely referred to oncologists for treatment. I venture to say that if we ever reach a point that our PCP's refer patients to oncologists who are experts in PCa rather than urologists who may be experts in treating PCa surgically we might find multiple "gold standards". These would be based on the particular diagnosis, a full battery of testing that urologists do not routinely do today (see JohnT's many posts on this) and a reasonable balancing of quality of life issues.
For some there will never be enough long term studies that demonstrate the effectives of the various radiation treatments. For some of us - me included - my research showed the high efficacy of radiation and the considerably less onerous side effects that led me to my decision.
2. Why are people turned down for this treatment? Primarily for large prostate size, urinary problems or evidence that the cancer has spread beyond the prostate. The latter meaning that surgery is also not a reasonable approach. Unlike some of the inferences of poster on this thread, the experts in combination radiation treatment frequently treat high Gleason cases with success.
3. Is great skill needed to administer it? Absolutely. Just as you would not want to go to a surgeon with just a few robotic surgeries under his belt, you would not want the radiation treatments administered by rookies. 'Hundreds" is the key phrase here. In my case my radiation oncologist had done over 1000 seed implants and had done over 500 in conjunction with the urologist who participated in the procedure.
If you detect a bias in my answers I unabashedly admit it. I think surgery's rep as the gold standard is tarnished and brachytherapy or combination therapy offers a better option. But, that's just me...you obviously have to make your own educated choice and I wish you luck.
Tudpock (Jim)