Jonah wanted Nineveh to be destroyed. He didn't want to go and warn them in case they repented because He knew that God is a God of grace and mercy and would spare them. That's why he tried to get away from God, but he underestimated the wide reach of God to get hold of him no matter where he went. When he got to Nineveh and gave them the message, they all did what he knew they would and repented. So he went out of the city, sat down and sulked. God had to come and speak reason into him. We don't know how Jonah responded to that. Jonah knew the atrocities that the people of Nineveh had done to the people of Israel when they sent raiding parties to kill innocent men women and children. Jonah could never forgive that. He was not God. He was a human like all the rest of us. Do you feel sad or glad when Adolf Hitler and his gang of criminals met a sticky end at the end of the second world war? Do you get pleasure at seeing Isis fighters being killed, especially after hearing about the atrocities they did to innocent people? If God told you to go to the Isis leadership and tell them that they will be utterly destroyed in 40 days, would you go, or would you run in the opposite direction? (not to preserve your life, but because you want to see the whole lot of them destroyed?) Challenging questions. The truth is that we are not as gracious and merciful as God is.