@newtosc after doing considerable research and talking to the medical oncologist and radiation oncologist, where I was told by the medical oncologist that he believes we are vastly over treating early stage breast cancers, (he said there's a big movement in oncology in that direction.) For me it was quality of life. I knew I was not going to do both because like you I could get to the 99 percentile with radiation alone. I figured five days and extremely little side effect versus 5 to 10 years of bone loss, brain fog, joint pain, potential eye problems. It just wasn't worth it for me and I am 69 years old, I chose quality of life in my decision.