DC is a great place to live. Tons of stuff to do, great food scene. and compared to most "world class" cities in the US its actually relatively affordable to live in the urban areas.

While cyclists love to gripe (and legitimately about their safety) for a city its size the DC metro area has a pretty robust road cycling and triathlon scene. In that vein, its amazing to be able get up early and go for a run or bike through the monuments.