Remote controlled autonomous robots/drones can also be used for, say, elder care.

A nurse can log in to a HelperBot remotely, check up on the client, tidy up the house and maybe even give medication. Instead of having to drive around between clients, losing maybe hours a day just on transit, one person can manage more people per day.

...but the same system can be modified for KillerBot easily like we know from EVERY SCI-FI BOOK EVER.

We live in interesting times.

Honestly that sounds dystopian even ignoring the killer robot aspect. Imagine the only "flesh and blood" human contact you have being optimised away to reduce cost by 10-20%.

Yes, in a perfect world we'd have infinite nurses who have infinite time to spend quality time with each client.

In the real world, right now, nurses have a set time in minutes to visit each client and if there's traffic or someone has fallen over and needs extra care, guess what? Someone else gets less time or the nurse has to work overtime, usually un(der)paid. (Sauce: have people in both sides of this equation in my immediate family)

This is why old people get shoved into care homes where they manage 20 clients with one nurse because the transit time is "across the hall". And that's how people get institutionalized, even the fit and healthy ones get demotivated, bored and stop trying. Saw this first hand when my grandmother couldn't live in the house she had lived in for half a century because she couldn't get enough support at home. It took her months to go from mostly alert and energetic to practically waiting to die.

I'd much rather have the daily care of my elder relatives managed by a remote operated bot than watch one more grandparent wither away slowly in an elderly care facility.

>I'd much rather have the daily care of my elder relatives managed by a remote operated bot than watch one more grandparent wither away slowly in an elderly care facility.

Yeah shit, I don't know which is worse. My plan is just dying before I reach that stage.