I think we agree but I was trying to make a bigger point than your reply captures. I doubt that you will even experience the terminal illness assuming there are many more possible futures where you stay healthy and anti-aging science advances than ones where you are miraculously saved at the last minute, by aliens or luck.

That makes the roulette scenario relevant to our experience. Because if you have the conviction to pull the trigger if something doesn't go your way you have the three options I laid out. So most likely you don't even have to try - assuming you are sure you will.