At 82, being about your age and having low dose treatment for prostate cancer a couple years ago and now being treated for kidney cancer with Keytruda and having had high dose radiation to stop bleeding from malignant kidney lesion six months ago which was successful, I can relate to you. I also opted out of surgery for Kidney because of my age. I take it a day at a time and am in the process of deciding whether to continue with the immunotherapy because of severe skin rash. There are many of us going through a difficult time battling cancer.