Why was Itachi trying to kill Sasuke if he loved him?

Answer 1

He wanted Sasuke to hate him so he would become strong. All he ever cared about was his younger brother, and he wanted Sasuke to become strong enough so he could die at Sasuke's hands. Itachi became this way ever since the Hidden Leaf Village ordered him to kill all Uchiha because they were trying to take over the Hidden Leaf Village. Itachi fufilled this mission, and killed all of the clan except Sasuke and Madara. He became an Akatsuki and later died when his disease finally killed him at the final battle between Sasuke and Itachi. Upon realizing the truth, Sasuke regrets killing Itachi thinking back to when he was a kind, loving brother and always was. He formed his Mangekyo Sharingan after losing Itachi, the one closest to him. He vows to destroy Konoha (Hidden Leaf Village) for putting Itachi at the fate he had. He later joins the Akatsuki and becomes an international criminal, something that Itachi tried to prevent.