I think it’s not possible to understand unless you know the feeling. You’re right that most people don’t. But many do: Robin Williams, David Foster Wallace, Aaron Swartz.
I don’t claim to speak for them, but if any of them used it as an escape — which seems somewhat likely - then they’re examples that the logic can be turned against someone strong, using their strength against them by encouraging them to accept the inevitability with composure.
You’ll have to take my word that there are many more of us than those famous examples, though.