@chdot: "I can't keep everyone happy"
That's unfortunate and also inevitable. Your censoring has made a couple of people unhappy (this time around I just found it amusing)
My thoughts are don't try, we are (mostly) grown adults and if we get into a debate that irks us then that is our fault.
@Steveo - I think it is because they have paid huge sums of cash to pass an exam so they can drive the black cabs and effectively "graduate" up from the private hire firms
Also black cabs are the only ones allowed to pick up people on the street who wave them down, private hires can't do that and can only pick up people who have called and ordered one. Which is why the taxi rank at the airport has only black cabs and only from the two companies the council(?)/airport have selected (they have P and V numbers on their windscreens)