Ummm, I hope you learn at least a little bit about child psychology before having any children. Children very, very quickly learn to show empathy and concern for others' needs, if they are given the right environment to do so.
Children (usually) only show sociopathic tendencies if their parents treat them like that's the only option. Sadly, this kind of mistreatment of children is absurdly common in the US, particularly as many parents don't even realize that they could be have far less frustration and a far more enjoyable time as parents if they just learned to stop setting up power struggles with their children.
Of course, sometimes there's brain chemistry that gets in the way here, but most children, even toddlers, can learn to notice and respond to the needs of others in positive ways, albeit clumsily.