Collateral Damage
There's an interesting conversation between Abraham and God in the book of Genesis. God had revealed to Abraham that He was going to destroy the cities of Sodom and Gommorah as they were exceedingly wicked. Abraham was concerned about this because his nephew Lot was living there with his family.
Abraham wanted to appeal to God's mercy by saying "Surely, you wouldn't destroy the cities if you found X righteous people there" for decreasing values of X.
God: "If I find fifty righteous people, I will not destroy it"
Abraham: "What if there are five less than fifty, will you destroy it?"
God: "If I find forty five righteous people, I will not destroy it."
Abraham: "What about forty?"
God: "I will not destroy it for the sake of thirty righteous people."
Abraham: "What about thirty?"
God: "I won't, for the sake of thirty."
Abraham: "What about twenty?"
God: "I won't ..."
Abraham: "What about ten?"
God: "I will not destroy it for the sake of ten."
God sends some angels to exfil Lot and his family out of the city before raining down fire on the cities.
There's another similar situation, and it's from the story of Jonah. Jonah was a prophet sent to the city of Nineveh to preach against them. Surprisingly, the people from the king to the poorest person repented and asked God for mercy, and God relented.
However, Jonah was not happy. He wanted to see judgement rain down upon them. It appears Jonah had some pre-existing animosity towards the people of Nineveh.
He goes outside the city to see what would happen to the city. It was very hot, so God had created a plant that had provided some shade for him and Jonah was happy about the plant. The next day, God made a worm to damage the plant so that it withered in the heat. The oppressive heat made Jonah faint and made him wish for death.
God asks Jonah whether it is right for him to be angry about the plant. Jonah says that it is right for him to be angry.
God then tells Jonah that if he cared about the plant even though he did nothing for it, how much more should God feel pity for the great city of Nineveh which has one hundred and twenty thousand people and many livestock.