Opinion | What the Science of Addiction Tells Us About Trump - POLITICO
Although these are new findings and the research in this area is not yet settled, what this suggests is that similar to the way people become addicted to drugs or gambling, people may also become addicted to seeking retribution against their enemies—revenge addiction. This may help explain why some people just can’t let go of their grievances long after others feel they should have moved on—and why some people resort to violence.