The type of robots that should not be created is the type that is sentient. In your previous question, you described robots that have feelings and are self aware. This is the type of robot that should not be created.
The reason for this is that we would be creating beings that were in some sense our equals without really knowing what we would be getting. We would not know, for example, if this sort of robot would have a conscience. If we created beings that were human except for a conscience, would we not be creating a potential race of monsters who would act only based on their own desires and what they thought was beneficial to them?
There are serious ethical issues with the idea of creating a new form of life and particularly one that is like us in so many ways. We should not create robots of this sort.