You're still paying the doctor for their opinion. Medicine is an art - not a hard, black-and-white science like, say, mathematics. Doctors' professional opinions are necessarily based not only on their objective knowledge but also on their experience, feelings, instincts, and beliefs. Even many/most objective/quan!@#$%^&*ative results in medicine require an accompanying subjective analysis and judgment call based on said experience, feelings, instincts, and beliefs. Hence, unless one argues that people who are religious, or pro-life, or ... should be denied the opportunity to practice medicine, then having doctors who refuse to prescribe certain medications is, unfortunately, inevitable.