Thank God, Jesus came to take away sin with the one death that could atone for disobedience, the one life that could please God. Jesus came to sign the adoption papers that make us the children of God. But Paul says it's as though we're sitting in the orphanage waiting for our Father to come to us. It's a sad happy experience. Don't ever get used to all that wickedness.
Life is a sad-happy experience.
You should be sad when you look around and see the evil of the world. But inside, as a Christian, you have a joy and peace that the world cannot give or take away.