Childhood experiences influence individuals’ perceptions of themselves and their future. This study aimed to analyze the relationship between benevolent childhood experiences (BCEs), adverse childhood experiences (ACEs), and attachment in adulthood, compare the general population with sex offenders and assess the variables that impact attachment. The sample comprised 171 participants. A relationship between ACEs and attachment was found. Sexual offenders had higher scores of childhood victimization. BCEs, education level, and emotional and physical abuse are significant predictors of attachment anxiety. BCEs and divorce/parental separation are significant predictors of attachment dependence. ACEs conduct to more difficulty trusting others, and fewer BCEs lead to more anxiety about thoughts of abandonment or rejection.