Dean,
I think it is wonderful your family is standing behind you. When my dad was first diagnosed he decided he didnt want any traetment because he wanted quality instead of quanity as well. My mom called us heartbroken and scared. We all rushed over their house to talk him into at least just trying it. We thought if he had a chance he had to take it. We had no clue about Lung cancer or any other cancer, this was our first experience with it so we took what the doctors said as Gospel. We were so scared.
Well, my precious dad agreed after many hours of persuaded him. He did it for his family because its what we wanted and he would do anything for his family. I can still see his face when he said "ok I'll do it" he was so apprehensive.
I live with guilt every day because I talked him into treatment that brought his quality of life way down, and eventually took his life. I wish I would have told him I was sorry, but I thought right until the end he would get out of that bed and be ok. I wish I was more informed when I was trying to persuade him.
My point is Dean, you have to do what is right for you. I am not saying treatment doesnt work because I have seen it work miracles for all the survivors here. Follow your heart and be at peace with your decision, it seems like you are. I admire you.