Power over the end of your own life is one of the most basic 'rights' a person has. Why should my personal feelings about the methodology of the end matter at all?
My sister died of an overdose a few years ago. I'm sure it was an accident, because she only took have the bottle. My other sister and mother were so disturbed by the possibility that she did this intentionally that they even changed the obituary to exclude the possibility. So it said something about complications of a heart condition, which she did have.
But the fact remains that she is gone. Intentional or not, she isn't coming back.
So what difference does it make? Why do the details make a difference to anyone's understanding of it? Why is it a moral issue? Why should anyone feel differently based on a perception of intent?
Why shold the living feel shamed by the intent of the dead? Isn't the finality of it enough to obviate this kind of thinking?