I can’t claim that I understand what you’re going through, but I do claim that I understand your reasoning. My dad went through the same around a decade ago.

Seeing him try chemo made me conclude that living means more than surviving. Make sure your family understands this part.

Come to think of it, it’s almost 10 years to the day since he died. I never questioned his choice, and I’m happy that he got to the end on his own terms rather than being pestered by family pressuring him to endure a kind of pain that we could never understand.

EDIT: Just for the record, I’m all in favor of at least trying treatment - It works well for many. If it is truly insufferable, treatment can be aborted.