Pain, suffering, disease, death are all brought on by the sins of man. There was no pain, or suffering, or any other ungodly thing in the Beginning. Man was not meant to die when God created the Earth, thats how the lion and the sheep where able to lay together. God intended for us to be vegetarians, Genesis 1:29-30. Only after Adam and Eve ate of the Forbidden Tree was death introduced Genesis 3:19. Pain is brought on by our own sinful ways.