The "advantage for you" is no need to interact with another human being. For people who are antisocial, who are listening to something over earbuds, who are onl

The "advantage for you" is no need to interact with another human being. For people who are antisocial, who are listening to something over earbuds, who are only visiting a country and don't want to awkwardly be addressed in a language they don't understand, etc. all this self-service is liberating.