Ira suffers so much, he feels an immense guilt over his actions, still he carries on, because he knows (was led to believe) that this is the only way to save the world. Of all of the Foretellers, he's the most selfless. He consciously acts against his personal believes and wishes in order to fulfill the higher goal. He can’t even allow himself to feel anymore, because he knows, it’d break him.
… I wish he had someone who was there for him and gave him strength when he needs it. It’s so sad to see him like that.