Whereas some urbanites might not leave their area code or even their local delivery radius for a bite, Bostonians see no limits when it comes time to choose a place to eat. Good food is good food, and there's no use in cutting oneself off from the possibility of encountering something better. Strip malls, ocean-hugging cliffs, hidden suburban dining rooms.
Location has no bearing on taste.
It makes sense. Boston is a city of neighborhoods, each as singular and emotive and self-knowing as an Edward Hopper painting. It shouldn't and it doesn't, thank the culinary gods. More and more, the concept of a Boston restaurant transcends city lines and zip codes. Suburbs like Waltham now house nationally-recognized restaurants.