Being nice???????
Think of all the people you just put out of work with that statement.
Hovercraft: no tire makers, tire sellers, no one changing tires, no more double taxation to dispose of them, No more roads made, no more roads patched, painted, surveyed, land cleared for new ones. No more repair of brakes, making of brake pads and rotors. Why even the wheel bearing industry would suffer.
Robotic pets: No more veternairains and rabies shots, no more dog trainers and pet setters, No more pet chews, shampoo and pest control, no dog catchers, no dog pounds, no need of fences to keep them in.
Boy, we just added to the roles of welfare big time!