Oh, I've made my case. Perhaps not successfully, but I've made it.
I've wanted to avoid straying into the morality of euthanasia because I honestly cannot understand the rush to die. Or perhaps more accurately, the rush to help someone else die. I don't know about you, but I know that (a) if someone I loved wanted to die, I'd do my utmost to persuade them not to, and (b) I hope very much that if the roles were reversed, they'd do the same.
I'm not saying exactly that it would be a case of "I want to die" -- "Oh, here's some morphine then", for most people, but in the long run I would rather take every possible effort to keep someone alive until it is absolutely clear that trying to do so is futile and not even worth it anyway on quality of life grounds.
And I am worried that in any scenario where it is easier, or at least legal, to carry out euthanasia or assisted suicide, then the reasons for doing so would inevitably become wider.
Our positions are, I think, closer than you might believe -- we just have different ideas of how to implement it. Everyone will want safeguards for this, safeguards that last, that protect people from being pressured into ending their life. I think that is more easily ensured by having the test be that people have to demonstrate that the death was compassionate.