Humans can get hooked to anything that triggers a 'feel good' response, be it gorging on food, drugs, gambling or even exercising. With all the grinding, long hours and stressful situations "modern life" puts us through, it's not difficult to see how people more and more just want to hit the 'instant gratification' button instead of actually getting better by working their underlying issues.... there is simply no tim…
The problem is that some of these activities that deliver gratification - drinking alcohol, drinking coffee, smoking weed, playing video games - can be physiologically addicting. You might not realize your habit has become an addiction until you're already addicted.
A cup of coffee a day. A couple hours of video games in the evening. Are these addictions? Where do you draw the line between healthy, and harmful? That seems fairly subjective to me. Yet, there's plenty of functional alcoholics that would say the same thing about their abuse, right?