This is exactly what living with addiction feels like. Unwell delusion at odds with unstoppable consequences. Sick thinking that comforts as it kills.
Beyond that gritty and discomforting topic, which already makes it well worth reading, it's a damn good science fiction story. Entangled in paranoia, PKD delves into the seemingly hardwired "Us vs Them" dynamic while featuring strange technology that extends real social ills out to their most striking metaphorical forms.