DC is so navigable and beautiful. There are not many other cities left in America where you can truly walk or take cheap public transit and it be convenient and enjoyable. I love not needing to rely on a car to get around, and the city features so much beautiful architecture and tons of green space (at least in NW and NE). Another thing we all take for granted is that, compared to places like Boston and NY, we have a ton of new real estate that pushes down prices and generally makes it more affordable to live in a walkable area.