Probably they want to kill themselves a certain second, but as climb the stairs, load the magazine or start unwrapping the Tylenols they change their minds.
(The mind is fickle like that, different people handle life issues differently so I pass no judgment. Personally, I think suicide is somewhat selfish, unless your children, parents /those dependent on you are cared for. But even with material things, they need the person in their life.)
I don’t think “free will” is a coherent concept. I’ve never seen a definition that actually makes sense.
There is no “you” besides the cells. Fundamentally, there’s no qualitative difference between some brain cells “deciding” to start replicating without limit, and some brain cells deciding to to swallow a lot of pills.
Does that mean there's no difference between a thinking mass of neurons asking you to remove the brain tumor, vs. the tumor that only expresses "grow"? If you would help that person remove the tumor, you're exposing a qualitative difference between the thinky bits and the not-thinky bits. If you wouldn't, then you're absolutely ridiculous.
That qualitative difference comes down to “disease.” I’m not sufficiently well versed in medical philosophy to give a good definition of that, but I know the distinction exists and is useful.
Suicidal tendencies are also disease. If you could identify the cells responsible and the person asked you to remove them, would you? How is that different from a tumor? (And for more fun, consider the cases where a tumor is causing suicidal impulses.)
I really dislike this "suicide is the most selfish thing", but I came to appreciate it for what it is - a meme. One of few of this kind society uses to discourage suicides. Others like that include pretty much every religion I've heard of making suicide a grave sin that will prevent you from reaching the desired afterlife.
(The mind is fickle like that, different people handle life issues differently so I pass no judgment. Personally, I think suicide is somewhat selfish, unless your children, parents /those dependent on you are cared for. But even with material things, they need the person in their life.)