In reply to wbo:
We will, in the not very distant future, not have a choice to respect the sanctity of life due to sheer numbers of the human race.By then we will have become vermin, if we are not already such. So the next big thing to try to sort is the background to ever increasing numbers of us, which will include all the religious anomalies and illogical approaches to the human inhabitation of the earth.(At least the pope has recently moved a little nearer to being less flexible with regard to abortion and related topics.(I am not suggesting abortion as a way of population control))
So eventually it could be that there is a life-length quota for each of us. So we could have a cut-off point of say, 85 years, after which you will be euthanized in the best possible state sponsored deathly way.
In due course the age will come down a little to accommodate the overall world population.
Perhaps you could gain a couple of years back if you agreed to act as a tissue culture incubator to supply hospitals with necessary replacement parts/tissues.(But then is that increasing the number of survivors unnecessarily?)
Oops I think that I went off on a tangent.
Euthanasia and planned dying do have a reasonable role to play in our society and the worries raised by others can be addressed by a very tight control of the situation.