Originally Posted by stockexchanger
The nice thing about the train is that when you get off, you are in the middle of the city. From any of the airports you have an expensive cab ride in town...
Have you ever flown into National? The "expensive" cab ride is no more than $15. Or you can take the Metro. If you take the train instead, you arrive at Union Station, where I presume you'll find yourself with the same options for onward transport.
While I'm not against taking the train, I can't agree at all with your portrayal of flying as inconvenient.