I wonder if it's possible to buy a robot that will take care of my body which will massage my head, leg, hands on demand for hours and unlimited time till I desire! That will ne a heaven come true!
Yes you can if you have few millions to spend for that AI massaging robot. 
So its better to buy a massaging chair which cost few hundred dollars or even you can hire someone professionally for the whole life time still the expenses won't reach the cost of an AI robot at the current moment.