Sometimes we cry just so it lets us know that we can feel emotion. The intensity, the despair, the emptiness inside just bursts out. Repressing these feelings does not make anything go away. It's still there bubbling under the surface. But so long we've come to deny ourselves of hurting, of feeling lonely and feeling utterly hopeless that we become numb, immune to the feeling itself. So we cry, when we can't deal with it anymore. Energy all sapped, let it go. Cry so we can feel again, only to force it back into the depths of our souless souls.