Your sacred all-powerful-government-that-must-be-obeyed argument has no bearing on moral people. And people of deep religious faith should not be banned from certain jobs, as you demand.
What none of you seem to understand is that pharmacists are part of the medical establishment and the medical establishment is already, to a great extent, controlled by the government. Under the current system, this makes the profession of pharmacy in a nebulous position that does not seem to me to be entirely within the private sphere. Now, if you disagree with this system, fight to change it in one way or the other. Advocate deregulation of the medical establishment. Claim that pharmacists should be considered solely private merchants, and not recquire governmentally issued licenses to practice their trade. But the idea that pharmacists should be able to pick and choose which prescriptions they fill out runs entirely against the current system, for better or for worse.