You can't quit every time you get disappointed. That's part of the learning process. Your marriage, church, job, and friendships will all produce hurt at some point. If you walk away every time, you fail to learn how to forgive, you miss the chance to develop patience, and you never get to see how God can give you the grace to love people through their mistakes. You need all of that because it is exactly what God extends to you when you mess up. You can't say you want to be more like Christ and quit every time you get hurt. You end of defeating one of God's purposes for your life. Quitting is easy, but just know you may miss an opportunity to grow spiritually. God bless!
