Like most of the people you mention, I have an aversion to the thought of suicide. And I know that when someone commits suicide, it is often devestating for their loved ones, so it does seem a little selfish. When someone is suffering from depression or addiction, they might feel hopeless, but with proper treatment, they can perhaps recover and go on to lead a normal life. If someone has a painful form of terminal cancer, they can probably be made more comfortable with pain killers.
Of course, I say all of these things as someone who has never been addicted, almost never been depressed for more than a day or two in my whole life and never been in excruciating pain. It’s easy for me to make armchair pronouncements about what other people ought to do in situations that I’ve never experienced myself. I might feel differently if I was in their shoes, so I try not to be too judgemental of people who have made different decisions than the ones I imagine I would make.
That all said, I must admit that one of the things I fear the most is getting some kind of dementia such as Alzheimer’s and that’s one of the only situations that I could imagine myself contemplating suicide. There’s almost no effective treatments for it and to me, if my mind were destroyed, I would cease to be the person I am now, the person that my loved ones care about. Only my physical body would remain, but it would, in my opinion, be nothing but an empty shell.
If I had advanced Alzheimer’s, what would remain of myself except for my body if I couldn’t remember how to dress myself or feed myself, no longer remembered or was interested in all the things I use to know and love that make me into the unique individual I am, had no more memories of my past, couldn’t remember what I said or what someone said to me a minute before, and couldn’t even remember who I am? I’ve seen dementia turn kind and considerate people into abusive and even violent ones who are nothing like the individuals they once were. The prospect of that happening to me would be almost unbearable.