For Christians & non-theists: The Problem of Evil (Revisited...again). How would you answer Ivan?

The best Christian response I can give is this... It was idyllic in the beginning. Humans ruined it. God has interfered for us in the spiritual sense so that we do not have to die an eternal death. That's what he saved us from. Until Jesus comes back, we must endure. He calls Christians to be a light in the world, to be his hands and feet (not just mouth pieces). Where are the Christians who are taking up this work? We're not doing enough and I'll admit it. My heart breaks daily for the evil in the world.