Echoing all of the above, I cannot imagine the situation you find yourself in, or how I would respond in that same situation. I have nothing but respect and admiration for your attitude.
It's rather a personal wake-up call to me, in a way, as I've recently got a new job in cancer research. This just hits home what a sudden and devastating illness cancer can be, and how important it is that we (as scientists) tackle this disease as fervently as we possibly can.
I'm only sorry that we're most likely too late for you and the thousands of people who are also in your position. With that said, the doctors don't *always* get the diagnosis of terminal cases correct, and for your sake, and the sake of your family, I sincerely hope you fall into this minority of cases.
My heart goes out to you and your family at this time.
Roo