Evil is made, not born. And when I say evil, what evil really is is all about a contraction of empathy and an expansion of sociopathic behavior. People are made evil by their genetics, their upbringing, their experiences, and their feelings. I wouldn't call it "evil," though, but simply very low vibrational beings. People who simply do not feel what others feel. I don't wish to blame them, but sometimes people do make a conscious choice to become evil. Most of the time it is nature or nurture, however.