I don't want a person I don't know very well in my space.

That aside: if I'm lucky enough to find a person who's good and reliable, they might move away, switch jobs etc.

It has all the headaches that come with hiring and managing someone, because, well, it is exactly that... If I don't want to be a manager at work (been there done that, happy to let others do it and get the raise that comes along with it), I sure as heck don't want to do it at home.

Robots don‘t steal and don‘t want a raise.

The list of plausible answers is long enough as to question why you felt the need to include the word honestly, irony? One example: social anxiety.

Less liability?

Humans have emotions. Best avoided.

With a robot housemaid, I wouldn't have to get dressed. :-P

More seriously:

- I wouldn't feel obligated to 'pre-clean' anything. Who wants to come across as a thoughtless/careless slob whose personal habits amount to borderline-abusive demands on the cleaning staff? Not me... and where does that line get drawn, anyway?

- I wouldn't worry about stuff being picked up and misplaced

- I have never had problems with maids stealing stuff, but I know others have

- Cleaning can be initiated or postponed as needed, with no dependencies on someone else's schedule

"hey Rosie, the cat yakked on the rug again"

(real-time mess handling)