This has always been an emotional topic and there really is not an answer that is right nor wrong, it is a matter of conscience.
There can be arguments coming from people who have had personal experiences of loved ones going through the agony of dying supporting voluntary euthanasia. Similarly, there can be arguments from those who are concerned with undue pressure from relatives influencing a patient to make a decision.
Yet, why is it that theists seem to have only one answer, being against voluntary euthanasia and for no other reason than they perceive it to be against God's will?
Does this show a cold-blooded lack of any compassion on the part of theists?
Are they washing their hands to the whole matter by leaning on the old excuses of "we believe" and "it is written"?