Many times, people would not go as far as to say that God did evil to them, but they would say that God approved it, but I tell you something, there is no difference between what God approves and what God does.
When you know the state of a man that every unsaved soul is damned unless they find Christ, you will have a burden when you know that God wants all men to be saved. 1 Timothy 2:4, Who will have all men to be saved, and to come unto the knowledge of the truth.
The reason that God chose us is for us to produce fruits. This is why He called us and chose us and anointed us so that we can bring forth fruit. When we bring forth fruits, it means we have answers to our prayers and have received the favour of God.
The ultimate vengeance is not that your enemy will die. The God we serve is good and He will judge your enemies. The ultimate vengeance is for you to succeed in the presence of your enemies.