Drones in cities are a bad idea

It's year five, or maybe ten, of "drones are going to revolutionize transport" and so far, we've got very little to show for it. Maybe it's time to put these foolish ambitions to rest and focus on where this technology could actually do some good, rather than pad out a billionaire's bottom line or let the rich skip traffic. The promise of drone deliveries, drone taxis, and personal drone attendants has never sat, or rather floated, right with me. There's so little to be gained, while braving so much liability and danger, and necessitating so much invention and testing. Why is anyone even pursuing this? I suspect it is the Jetsons-esque technotopianism instilled in so many of us from birth: It's only a matter of time and effort before we have the flying cars, subliminal learning pillows, and robot housekeepers we deserve, right?