Not worth it

I'm reading Plutarch's Life of Marius.

There is testimony both to the temperance of Marius, and also to his fortitude, of which his behaviour under a surgical operation is a proof. He was afflicted in both legs, as it would appear, with varicose veins, and as he disliked the deformity, he resolved to put himself into the physician's hands. Refusing to be bound, he presented to him one leg, and then, without a motion or a groan, but with a steadfast countenance and in silence, endured incredible pain under the knife. When, however, the physician was proceeding to treat the other leg, Marius should suffer him no further, declaring that he saw the cure to be not worth the pain.