I'd suggest you read the act Mark.
The patient must make a written request, signed by at least one independant person, they then must make an oral request. They then have to reaffirm their wish at least 15 days later.
The law requires 2 physicians to examine the patient, and, if either physician feels the person may be suffering from depression they shall refer him to a counselor.
The physician isn't charged with life or death - their charged with evaluating a patients condition, prognosis, and their ability to give informed consent - THINGS THAT THEY DO EVERYDAY!