Jeffrey Dahmer killed because of complex psychological motivations rooted in his compulsions, fantasies, and deep-seated personal conflicts. He murdered not out of anger or revenge but driven by sexual desires, the need for companionship, and the urge to control and possess his victims. Dahmer sought to fulfill disturbing fantasies, including creating submissive, "zombie-like" victims, and he exhibited necrophilic and fetishistic behaviors. He struggled with his identity and feelings of rejection, channeling his hostility into sadistic acts against those he was psychologically attracted to. Dahmer's killings were organized and calculated, often involving drugging, strangling, and dismembering his victims to preserve parts of their bodies as trophies. Psychiatrists described him as having severe personality disorders but legally sane, able to distinguish right from wrong while being overpowered by his compulsions.