Why Warspite survived repeated wartime damage

At what point should HMS Warspite have sunk if all the damage from both world wars had accumulated without repair?

She would eventually have listed or sunk, but the premise removes the repairs that allowed her to survive each separate episode of damage.

The premise only works if each episode of damage accumulates without repair. Dockyard work restored Warspite between major actions, while carrying every hit forward unchanged would eventually leave her listing or sinking. Her heavy damage in the Second World War reinforces how much survival depended on repair capacity as well as the hull's endurance.