I don't care if Concorde was uneconomic. Some things you should do just because they're beautiful.
Its said that once a USAF pilot saw the Vulcan manoeuvring and remarked that it was awfully big for a fighter...
Not sure if the Vulcan was supposed to deter the Soviets with its nukes or simply scare them to death.
Edit: The Vulcan wasn't just loud in the "strategic bomber" sense of loud - it also sometimes generated a completely unearthly howl that it is famous for. Combine the engine noise and the howl and it really was quite a monster.
Just a shame it was originally built to kill millions of Russians. I know military investment produces all kinds of awesome technology, but... we could be better than that. And that's something Concorde felt like it represented.