It's a fair question. I don't have an easy answer, but I do have what I think are a couple of good starting places.
First: God gave us free will. The implications of free will are not particularly pleasant. For example, free will means that the actions of evil people can and must have consequences. But as we know from Jesus' own example, it's not what happens to us that matters, but how we respond when things happen to us.
As Christians, we believe that God intercedes when it suits His purposes, too. But again, the implications of free will are far ranging, and continual intercession would tend to preclude free will.
Second: God promises us eternal life. The more you think about eternity, the more you realize what a very different thing it must be. If we believe in eternal life, then the things that happen to us here may not matter in the way we think they matter.
Like I said, these are not answers. But they do help me to put questions like this into some sort of perspective.