It is true that robots can work on places where humans shouldn't .. places such as volcanoes, toxic areas, radioactive areas.That is completely okay because that would benefit the human but if robotics goes even bigger than it is now then they are going to be replacing us even in less demanding jobs. Employers are going to be using Robots since they won't be needing to pay them and they would do the work more efficiently in a way, and humans are going to be at home not making money at all.