>>281780723
That's pretty much what Fuji himself said. These desires are also carefully cultivated by Makima because initially there was nothing that Denji would feel broken up about.
Ironically it is Makima's last scheme, turning Denji into a public hero, that sends his desires into over-drive (to the point where he now desires a life far beyond what's "normal") and it encourages him enough to kill her.
Fujimoto: Consider the Mongol street children. They live in pipes under the streets and fish through trash every day to get anything to eat and afterwards to not use up their little energy all they do is sleep. As long as they continue living this way, nothing will change, but I can't bring myself to think that's all bad. So when Denji and Pochita are living a similar life together, there are many difficulties but it's not unfortunate. That's how I wanted to depict them. However if the protagonist were completely satisfied with the current circumstances there would be no catharsis so I had him gradually develop greater desires.