Well as an oncologist, I respectfully disagree. Cancer is maladaptive and there is no natural benefit nor is it something that should be in the body. I would say, philosophically, that the course nature takes is that the response the body gives from such a maladaptive disease. Giving treament, with proper caution isn't playing God, its being a physician. When referring to God I am talking about a physician serving as the sustainer of life and bringer of death. It is my job as a physician to provide the best medical therapy for the patient. Kavorkians thought on playing God when it comes to medicine just merely justifies his reasons for killing his patience.
Physicians shouldn't decide whether who lives and dies. I believe this will stigmatize our job. I believe in dealing with right to death issues there are gray areas as to who performs such procedures. Mentally I just couldn't bring myself to inject someone with sodium thiopental, Pavulon (also known as Pancuronium Bromide) and Potassium Chloride. Even though they were suffering to be the bringer of death is something that would psychologically effect me.
I can understand your stance, and it is of course the only one you can take.
My wife is in remission; she had oral cancer ( it started on the tongue - a bit rough on a non smoker, non drinker!), and although the cancerous mass was taken out, she the had problems with lymph nodes in the neck. After the second lot of surgery, she was given as much chemo and radio as she could take, and (touch wood) she seems O.K now even though the ravages of the therapies means that she is permanently in pain, feeling nastily remeniscent sensations regularly, which are frightening. She feels she can only live on a day to day basis; it isn't easy.
She has been working as a volunteer in the Cancer ward now - one day a week, which means that she sees many patients.
She often talks of elderly people who regularly return (after some time of remission), who are put through the system once again. A lot of those people tell my wife that they honestly don't know how they end up going through the interminable treatments - lots of them even say "Why on earth do they keep me alive ?- I have no quality of life."
The difficulty lies in that the cancer team will do anything to keep people alive - and those people are not quite certain why they go along with the treatment....it is almost as if they are unwillingly on some sort of treadmill of continuous sufferring. Ethically, of course, the hospitals are doing their job - trying to save people at all costs. In practice, this puts a tremendous financial strain on society, where money is already short, and society is doing all that it can to keep people alive for as long as they can - people who admit that, had someone asked them, they would have declined treatment. But that is contrary to human instinct, and there are all sorts of problems relating to familly (who don't want their loved ones to die), who put pressure on the patients to "carry on". I honestly don't know what the solution is..morally, ethically, and from a harsh logical and practical point of view..............