If your mental image of people who support the notion of death is people who are just apathetically suicidal, then you're missing the point.

They're not suicidal. But they have this big inconsistency in their ethical framework.

I mean, if an elder gets into a car accident, shouldn't we try to save them? If a fire starts in a nursing home, shouldn't the residents be evacuated and the fire put down? How come that everyone understands the importance of saving lives, but some flip 180 degrees on it if the cause looks "natural" enough and the victim is old enough?

No, my point is that I personally am very afraid of death, and would fight death from the selfish reasons.

People who support the notion of death seem not to constantly fear it themselves, but view it as something hypothetical, that they wouldn't have to face themselves in the near future (likely several decades).

I don't think I particular fear death. Fear of death is a monkey brain thing. I don't want to die because I enjoy living. But if I had the choice between dying immediately or living for a few more minutes while being pushed through a meat grinder, I think I, and everyone alive, would choose to die immediately. It's not too difficult to imagine torture and pain so horrific that even monkey brain prefers death.

Human brain can make that judgment wherever it wants. I think the general case that shitty medical routes are just not worth it is often true.

> people who support the notion of death

Isn't that a bit like supporting the notion that there is a sky above us?

Perhaps you are referring to people who reject the notion that death is to be avoided in all circumstances, whatever the consequences.