[zeestephen]

In the USA, it is my impression that fewer and fewer men over age 70 are being referred for prostate cancer surgery, unless the cancer is highly aggressive.

Is that basically correct?

In the 1990s, my completely healthy 70 year old father had prostate cancer surgery.

He developed blood clots in his legs during recovery, and almost died.

[ShadowAce]

Correct. Over age 70, the prognosis is about the same for surgery as it is for radiation treatment.

He developed blood clots in his legs during recovery, and almost died.

Part of my recovery instructions is to walk 10 minutes/day.

More walking = less clotting.

If you are male and live long enough, it is guaranteed that you will develop prostate cancer. "Long enough" in this case, means into your 90's, though.