I suppose we could pack into a condo but let's face it, DC is not New York. It would be tough to justify a New York-like existence with DC amenities (as good as they are). Additionally, I suppose we could move out to Aldie, but frankly we can live in the suburbs anywhere, and sitting in traffic around here is obviously miserable.
I guess. It just seems more and more the norm in many cities these days for more families to live in condos. Not to mention in Europe and much of Asia where land is more dense, even in "lower amenity" cities, it is far more the norm for kids to grow up in condo/flat style housing. As Americans, we're pretty spoiled.