My guess is that the truly uncontrollable painful time will be rather short and when and if that happens, hospice and drugs will ease me along . Also, I have the right to ask my doctors to advance the process and allow me pass after I have said my goodbyes to my loved ones. My wife of 54 years and my children know my wishes in this event and they will respect my wishes. However, I hope that no such decision need be made and I simply pass in bed after the evening news.
Mayoclinic connect is a very helpful site as it allows me to chat with people who are going through the same crap as me and that, in and of itself, is comforting and helps me to deal with the cancer.