So I was thinking about the three (legal) addictions that characterize American culture.
Alcohol, sugar and caffeine.
I don't think I was addicted to alcohol, but I had one or two drinks every Friday with coworkers. For a few months now, I've stopped drinking.
I've also got a sweet tooth, and over the last month i started paying attention to the "added" sugar content of the things I eat. It's crazy how much sugar is in everything. I then started thinking about ice cream shops, tapioca shops, frozen yogurt and the like. I realized that these companies are basically selling sugar to addicts. Selling sugar seems to be a great business model.
This addiction has to be the root of why Americans, in general, have a size problem compared to the rest of the world (mostly).
(Fun fact: subway is no longer legally allowed to call their bread "bread" in Ireland. This is because the sugar content legally makes it cake. Excessive sugar intake is so ingrained in our culture that we don't even notice it.)
I'm still keeping the caffeine addiction though. Two cups of coffee a day. It helps me work with focus, and the work helps people, so it seems justified.