One important area where the analogy doesn't work: smoking can't be done safely in moderation. Some people have trouble stopping themselves from going too far

One important area where the analogy doesn't work: smoking can't be done safely in moderation. Some people have trouble stopping themselves from going too far with Facebook. For example, comparing themselves to others, obsessively spending time, sharing things they shouldn't, or getting dragged into drama and fights. But for others it's entirely possible to just get on Facebook occasionally, discuss innocuous stuff, and keep in touch with people. That's not destructive or harmful. It's not a "vice" (to use the article's terminology) for me to hear that a relative is doing OK after surgery or to see that a friend enjoyed their vacation to the Rocky Mountains.