Simon Jenkins: Commuters, your city needs your Tube fares, your takeaway coffees, your nights on the tiles

They are London's great unloved. To Elizabeth I they menaced the city. Victorians called them the dark horde. As they swarmed over London Bridge, Eliot "had not thought death had undone so many". Now suddenly we need them, desperately. Come back, commuters. Rally to your city. It needs your fares, your rents, your humble desks and terminals, your Starbucks, your Prets, your nights on the tiles. It dies without you.