Household tasks can involve a robot moving with enough kinetic energy to maim or kill a human (or pet) in unlucky circumstances. And we'll quickly become habituated to their presence and so careless around them. Even a Roomba could knock granny down the stairs if it isn't careful about its environment.

You could make the same argument as with self-driving cars, that people already get hurt this way and maybe the robot is in fact safer. But it's still a hard sell that Sunny-01 has only accidentally killed 1/10 as many children as parents have—the number has to be more like zero.

Let's solve automating trains first then we can do airliners.