You have made a good point. I still do wonder what robots are around other than the pet type robots. You have pointed out even these would provide some benefit.
You may be interested in the HAL exoskeleton, for though it is not an autonomous robot it could well be of aid to caregivers who may need to lift and move the incapacitated.
"Do not follow where the path may lead. Go instead where there is no path and leave a trail." -- Ralph Waldo Emerson