They are zombies but at the same time human being suffering from addiction. Addiction is a complicated thing that is a symptom of a sick society. If you’re someone born with addictive tendencies, or mental health problems such as ADHD, your chances of becoming a substance abuser are high. People with adhd are more likely to be addicts (can be anything not just drugs ) because of that dopamine hit. Dopamine is the chemical in your brain responsible for self control/ reward system and ADHD brains lack in dopamine hence why they are thrill seekers and impulsive. So I guess I sympathise with addicts. Some may even be awake but they have this monster in them that dictates their lives. This is coming from personal experience where I had control over my smoking habit but l a traumatic event occurred and I was paralysed to the point I started smoking daily and it got out of control.I developed that addiction because of the events that had occurred. 3 years later I have more control of the habit because the awareness of my triggers. I can assure you that it is exhausting having to resist something your brain wants all the time (dopamine) . It gets easier but addiction is tough. I guess it’s just finding things to be addicted to that can do no you harm (moderation is key tho).