- go up stairs
- get up after a fall / reset itself
- pick up heavy objects
- precise motion (so no cooking)
- interact with buttons or touch screens (so laundry might be hard)
The one use case I think it might be worth it is if the robot can take a room full of toys and return everything back to where it belongs. Kind of like a one click, reset this room. If it can help me keep organized and clean around the house that would be a big win. Also, if it can help me detect which clothes are still wearable and which I should probably wash, that'd be nice.
I'd gladly pay 5k for a robot that can auto-organize my stuff around the house, even if it involves a lot of customization and setup. Imagine leaving your groceries next to the fridge and coming back to a perfectly organized fridge. Or letting your kids play in the play room and then the robot comes in and puts all the toys back. Or if you just tend to leave stuff out (throw your clothes on the floor or forget to return stuff), the robot can put it back.
I think that's a legit use case.