I chose surgery after talking to as many people who were willing to take the time to talk.
Radiation is effective, but...
that being, the tissue that's been irradiated becomes tough as shoe leather, so if, in the future, surgery was necessary, It 'could' be a complicating factor.
The DaVinci robotic surgery was minimally invasive, and the recovery time was negligible. Incontinence, often a side effect, is manageable. do the exercises. ED often goes away.
Knowing how aggressive the cancer type is important, and plays a big part in deciding which route to go.
Truth is, if every old man who dies had an autopsy, a significant percentage may have had prostate cancer, and never knew it.
Best of luck.
FWIW, prayer works!