If you check the fake websites the crew made for the Breaking Bad series throughout the years, you can read some pretty interesting things they posted. Many of them provide clear insight into what the writers feel about characters. One such website
led to a fake blog which conveniently had a post about various psychological illnesses.
The post's theme was "Remind you of anyone?", and the disorders listed are casually winking at the reader to reference characters from the show. For example, he goes over a substance abuse related psychological disorder, referencing Jesse. Then he goes over Kleptomania, referencing Marie. The final disorder? Antisocial Personality Disorder, a clear reference to Walt, with the winking clue about "breaking bad" at the end there. Antisocial Personality Disorder is often defined by a lack of conscience, by an inability to genuinely emotionally relate to others. For many of these people, love is a concept that is completely abstract. It means about as much as it takes to get something from another person.