I moved from Alexandria, VA, to Henderson, NV last June and overall, really do not miss the gigantic mess that is NoVA/DC.
Things I do miss: Metro, Smithsonian, biking into Georgetown on weekend mornings, various embassy galas, Eastern Market, Cherry Blossoms, buying wicked good blue crab direct from the fishermen out on MD route 2, pretending I'm in a spy movie.
Things I don't miss: traffic, rent gouging, paying too much for groceries, drivers who try to hit cyclists, angry people, the bizarre network of roads in Northern Virginia, that stretch of I-95 from Springfield to Quantico, did I mention traffic?
My in-laws live in Richmond and neither my wife or myself ever found a time where there wasn't southbound congestion from Springfield to Quantico. We tried Thursdays after morning rush, Thursday mid-night, Friday 4am, Friday noon, Friday 10pm (given we were attempting a weekend visit). I eventually said if we aren't taking Amtrak to Staples Mill or downtown Richmond, I'm not going, but Amtrak sold out weeks in advance.
Even though I took my job with me out to NV (hooray for computers!) I'd never consider moving back to the DC area. I figure even if I lost my current job, I'd stay put out here and find something else, even though much of what I currently do is DC dependent. There's simply too much to trade off in the way of low humidity, endless trails and mountains to play on and in, and the stark beauty of the desert southwest. In true MMM fashion, I'll keep socking away the cash so that someday soon, the job will be an option and not a necessity.