Triage is the process by which standard and immediate care patients are sorted from the "expectant" (fatal) cases.

I don't feel that is an example of doing the most good for the most people at all. Triage is something they do at disaster areas and in CSHs (Combat Support Hospitals) where there are limited medical facilities and not enough medical supplies to go around. I would classify this as almost exactly the opposite of what you described. Emergency triage is medicine at its absolute (though necessary) worst.

There is something fundamentally different between the prolongers of life and the bringers of death and the expectations their roles in society play.
I read a book once called "On Killing", and there was a poem on one of the chapter pages that described that very difference. It's a little bit more centered on combat medics and surgeons, but it's called "The Healers" and is here:

http://www.bartleby.com/266/111.html

~
Untired and defenceless; around them
With shrieks in its breath
Bursts stark from the terrible horizon
Impersonal death;

But they take not their courage from anger
~

Rather than saying they are fundamentally different, I believe they are fundamentally -the same-. They swore the same kind of oath, and just because they don't have to get up at oh-dark-thirty every morning to do PT doesn't mean that they shouldn't be kept to their promise.

I believe that anyone in the medical field, having taken that oath, that refuses to treat a patient should be barred from the profession for life. That situation is -exactly- like what Blog describes with a soldier going AWOL.

"You mean I have to go to Iraq and maybe get shot? Whoops, the job's a little tougher than I thought it would be. So what if I promised? Later!"

"You mean I have to treat some SARS patients and maybe get sick? Whoops, the job's a little tougher than I thought it would be. So what if I promised? Later!"