Active euthanasia and the patient-physician relationship
The concern that allowing active euthanasia by a physician could undermine people's trust in each other, on the one hand, and the patient-physician relationship, on the other, is voiced not least by the churches and the medical community itself:
John Paul II: Encyclical Letter Evangelium Vitae. Addressed by the Supreme Pontiff John Paul II to the bishops, priests and deacons, men and women religious, lay faithful and all people of good will on the value and inviolability of human life. esp. sections 64-67. Online Version
Entschließung des 98. Deutschen Ärztetags 1995 zur Aktiven Sterbehilfe. In: Deutsches Ärzteblatt 92, Heft 23, 9. Juni 1995, 1687.