Why Did George Kill Lennie Mentally Wrong

"You see; I truly believe that murderers are mentally ill… their brains don't work like the rest of ours do. To deliberately kill someone requires crossing a profound boundary. Most of us couldn't do it. We couldn't even think about it. But they can. They do. Why? Because they're mentally ill” (Defense attorney Elaine Whitfield). If you know that you are in risk of getting murdered, you would not like to hang out with someone with severe psychotic tendencies. Much less with someone that has psychotic tendencies and that has previously killed; as Lennie from Of Mice and Men, a book in which death was everywhere. To prevent death and suffering from spreading, George had to kill Lennie.
If George wanted to save Lennie from suffering, he had to

Lennie was constantly causing trouble because of his mental disabilities. He for example had to leave his previous job because he was being chased for causing extreme trouble. “´Her neck’s bust. Lennie coulda did that.´ George didn’t answer, but he nodded slowly. His hat was so far down on his forehead that his eyes were covered. Slim went on, ´Maybe like that time in Weed you was tellin’ about.´ Again George nodded” (Steinbeck 47). Lennie did not only kill someone in Weed; he also caused extreme trouble near the Salinas river. “She jerked her head sideways, and Lennie’s fingers closed on her hair and hung on. ´Let go, ´ she cried. ´You let go! ´… She struggled violently under his hands. Her feet battered on the hay and she writhed to be free; and from under Lennie’s hand came a muffled screaming” (45). Lennie´s mental disabilities and psychotic tendencies prevented him from acting like a human. Someone that kills people certainly does not fit in society, especially if that person is mentally disabled and does not control his actions. Lennie only needed hair to kill an innocent woman. Along his life, he would run into several women with long hair, making every woman with long hair and a dress in danger. It would not be rare to suppose that Lennie would keep assassinating innocent people. This considering the fact that he killed every animal he held and two women. For the sake of society, Lennie had to be killed by