I'm just a bit too heavy and every time I see the Doctor he tells me I need to lose about 20 lbs. It's not his job to force me too, that's something that I have to take personal responsibility for and do.
Now he can help, the doctor is there to give advise and suggest approaches to doing such things, but unless you are advocating doctors monitoring people 24/7 then they won't be able to do anything for people who won't help themselves.
I can't see any case where the doctor would be at fault unless he or she suggested a patient be obese, but that won't ever happen.
I'm a bigger fan of health care and not for profit make them fat so I get money, care.
Not for profit doctors? They have to make a living to. Even in our health care system (in canada, which many here on CC dislike) doctors still make a very good amount of money for the work they do.
Have fun with a heart attack if you tell doctors they can't earn anything, they won't refuse to treat you, they'll have simply left the profession.
Unless of course you're suggesting the state force them to work for nothing, then you're an idiot.