To crave for God’s goodness is to crave for growth
Therefore, rid yourselves of all malice and all deceit, hypocrisy, envy, and slander of every kind. Like newborn babies, crave pure spiritual milk, so that by it you may grow up in your salvation, now that you have tasted that the Lord is good.
1 Peter 2:1-3 (NIV)
… and this growth is necessary for life.