I found that Dr. Mark Scholz of the Prostate Cancer Research Institute has the latest and unbiased information on prostate cancer treatment. You can find additional videos and information on PCRI.org and Youtube.
https://www.youtube.com/watch?v=aGEVAWx2oNs
https://www.youtube.com/watch?v=WiJLRMbo5ns
https://www.youtube.com/watch?v=ArL2XD5Bx5I
Talk to as wide a variety of providers as possible as they often just sell their own specialties. Providers tend to talk in generalities "Most men... depending on..." so make sure to drill down and find out how the treatment will affect you as a unique individual.
When I went for one second opinon the answer I got was obviously based on actuarial tables, not me as a person. I was not happy.
At age 73 I had the same diagnosis as you and asked for an MRI to learn the location of the cancer to see whether that would affect my decision. I asked for an MRI which showed the cancer in a location that would guarantee ED with surgery. One of my major goals was to retain sexual function.
Also, I was offered active surveillance, but the cancer was too close to an escape route for this layman to feel comfortable.
I was told that I would be impotent and incontinent after surgery, but it MIGHT resolve in a couple of years, depending... On the other hand radiation MIGHT cause ED and incontinence a few years down the road. I decided to go with radiation so I could have the guarantee of enjoying sex and living wihout a diaper until maybe I became too old or senile to care. Too, with radiation the odds seemed to be in my favor.
I also elected to have hormone treatment. I put myself on a regime of one erection a day to bring in the needed oxygenated blood to maintain erectile health. Normally we do this through nocturnal erections, but without testosterone that doesn't happen.
Hormone treatment causes menopausal symptoms and was actually the most difficult part of the treatment. Not fun. Ask any post menopausal woman.
It didn't take long to recover from the treatment. I had maintained sexual function throughout.
Best of luck.
Guy B. Meredith, moderator.