Members of Congress don't know this city. They don't know what's right for its people. They approve the budget and all the legislation, but they do not themselves have to live with their decisions. They foist pet projects on citizens who are perfectly capable of deciding these issues locally. They prevent the district from taxing income where it is earned.
Unaccountable power is destructive.
It chokes the ability and destroys the responsibility of people to govern themselves. It just doesn't happen. People stop participating. They don't run for local offices. The civic culture of the community withers away.