It’s understandably difficult! First of all what does your oncologist recommend, knowing your history? Would treatment with Prolia or similar medication help? Your family members want you to recover and be cancer free (as you do) but you are also thinking about quality of life. Hormonal treatment can be very effective (I took an AI for ten years after chemo!) but it’s not a guarantee. So far, nothing is. As my oncologist says, after 11 years my chance of a recurrence is greatly reduced. But a new, different cancer ? Who knows.
Sometimes it’s very helpful to talk to someone outside your family, a professional counsellor who can assist you in your own thinking (not telling you what to think) so that you are comfortable and clear about your decisions. Your GP can provide a referral. Most of all, you deserve better than solitary weeping and wakefulness. I was 67 when diagnosed, and made some pretty important decisions about who I was and how I wanted to be in the first 12 or 18 months after. No, I didn’t retire! But I did accept that my time was uncertain and therefore very precious, I should spend it with thought but also with pleasure. We all should but sometimes it takes a crisis! Best wishes whatever you decide.