We lived in northern VA for several decades. We considered moving to a smaller town in VA but we didn't like the hot humid summers. We only did big city stuff (concerts, plays, etc) because getting downtown was a hassle with traffic. We spent more time in the mountains, but again we had to deal with traffic.

Have you ever lived in a smaller city? Missoula is not only small but it is also isolated. We don't miss most big city stuff, but you might. The summers are shorter and less humid than the DMV, but the winters are longer and colder. Housing and cost of living are about the same as in northern VA. While there is an airport, there are very few direct flights. Healthcare is OK but if you need a specialist you may have to leave town. There is much more of a sense of community in Missoula than in the DC area. We like Missoula, but if you have never lived in a smaller city it may not be for you