Obeasts negatively affect everyone by existing. They waste everyone's money by jacking up healthcare costs and injuring the healthcare/emergency services workers who have to bodily move them. They invade personal space in public and make the people around them less safe in emergency situations (among other negative effects). https://github.com/CarsandSarcasm/Your-One-Stop-Shop-for-Anti-Obesity-Science ("Effects on others" section in particular)