Are you are suggesting that if just one person could feasibly be influenced into requesting euthanasia against their better judgement, then that alone is an adequate reason for not having legal voluntary euthanasia?

If every proposed law was rejected just on the possibility that someone somewhere may find a way of abusing it, then we would pass no laws at all.

CountryGal
I see the point you are making about pressure by family.
But I figure that the physicians and psychologists who are dealing with voluntary euthanasia patients are well aware of this possibility of a patient being pressured by family.

In my knowledge, meetings between patients alone and in company of their families with the psychologist and physicians are one of the steps undertaken after a patient has applied for euthanasia.

About the family of the patient.
I read a research report about 'how families cope with euthanasia of a loved one (by Universitair Medisch Centrum Utrecht in Holland. This was a Dutch report; I haven't found an English translation) stating that families/partners cope better after losing someone who has undergone euthanasia than after losing someone who died a 'natural' death after a long time of suffering.

That is because the family have the opportunity to be very much involved with the process- being informed about pain and pain relief, the process of dying etc.
In short, they are better prepared and informed about the death of their loved one; they have received more support, open talks, and are shown ways of dealing with the situation.

Just watching a loved one fade away slowly in much pain proved to be harder to deal with in this study.

I know lots of mothers who cut their children off for lots of reasons - If we refused to make a law because it would promote disagreements we couldnt make any laws at all.