That’s such an absurd point of view. When the duration of the problems is comparable to your expected lifespan, it is permanent for all intent and purposes. Sure, an incurable illness is not permanent in that it has to end when the person die. That’s not a useful point to make.

> all of life’s problems are temporary state.

Not all. Incurable disease is just one example.

Can you agree that there's some threshold where the time required to endure the temporary state is untenable?

How can anyone except myself decide what that threshold is?

Until one dies anyway.