User blog comment:IamJakuhoRaikoben/Chapter 493: The White Dragneel, Review./@comment-74.43.16.57-20160711180910/@comment-1359322-20160712161742

And what does that have to do with the discussion above? Also none of the four you listed were affected by lost of relative as mentioned in the topic.

Jellal was mind controlled by Ultear, Lyon wanted to kill Deliora to prove that he's surpass Ur, Hades wants to obtain the One Magic, Zeref was cursed by Ankhseram and revived his dead brother to kill him.