Damon pushed Katherine away from him when she stopped him. "Why the hell shouldn't I?" he yelled at her, tired of holding himself together now. "Elena is gone, Lexi is gone, Bonnie's dead. My brother... is dead," he said, voice wavering on the last part, his eyes starting to well with tears. "There's nothing left for me. I have nothing, and nobody left. So give me one good reason why I shouldn't?" he asked.