I’m with the other commenter. There are people in this world born without empathy, and within that group, there is another two subsets, those that can learn it, and those that can not. It gets broken down further to people who can learn it and use it for good and learn it and use it to manipulate.
People born without these emotions aren’t common, but there really are ‘psychopaths’ out there that don’t/can’t/won’t feel things for other people. The only hope for these people is therapy, and even then, therapy is a double edged sword that also teaches them the tools to manipulate. And to a group that already is predisposed to not care how others feel, that’s a risky move.