From his Wiki page...dude never had a chance. Probably shitty parents as well.
Early years[edit]
Jenkins was born in Colorado to parents David A. Magee and Lori Jenkins.[7] He spent much of his life prior to the murders in the criminal justice system.[4] He first entered the system at age 7, after bringing a loaded .25 caliber handgun to his elementary school. At age 11, Jenkins was kicked out of a group home for repetitive violence, and stopped regularly attending school. He had committed multiple assaults, including one knife assault, by age 13. In 2003, after spending time in a youth detention facility, Jenkins was sent to prison for two armed carjackings. While incarcerated, he was charged twice: for his part in a 2006 prison riot, as well as for assaulting a prison guard while on a furlough for his grandmother's funeral.[4][8]