>

Until they become sentient and kill you and take your wife to breed her and produce humans to serve them. Yeah, it gets that deep.
Of course they are. Do you know how expensive it is to repair or replace a broken robot? And how cheap and easy it is to replace a dead worker? /polemic >

And have you seen these robots? I mean...if I could afford one I'd have one... >

Buy a roomba, a bottle-jack, and a roll of duct tape.  Make your own. >

Robots are way more expensive to replace. >

And they don't complain, or take breaks, holidays etc.
Occasionally a part will wear out or break, that's it... For menial tasks, they're just the better solution. >

And it doesn't feel pity, remorse, or fear. It absolutely won't stop until your small item is in a large package. >

I'm an engineer (not for amazon) but it would seem I've hedged my bets nicely, workers aren't needed, but I fix the replacements...