I am very cautious about attempts to legalize euthanasia. I am well aware of all the practical problems with doing so. However, I have never found a convincing argument to the effect that Christians should believe that euthanasia is always wrong in principle.
Why is it? No, honest - why?
The almost universal answer that I get from Christians is that only God has the right to take life. Now there is a good instinct in that claim but what interests me is that most of those who tell me this think that in some situations it is permitted to take a life (perhaps in war, perhaps in capital punishment). So most of these sincere Christians believe that sometimes it is permitted by God that human life is taken by humans.
Once one has crossed that line then it becomes a lot less clear to say that mercy killing is never permitted by God. Never? In fact, I do not find it at all hard to think that in principle God might use euthanasia in some circumstances to mercifully take a life. To me that has always seemed reasonable.
I'm not sure that I could ever do it. My instincts would be very much against it but I would not rule out a priori that it might be the right thing, indeed the holy thing to do in a particular situation.
So shoot me!