@Ana1234 - There have already been significant contributions to human life and society by robotic technology. Aside from all the innovations being used in factories and to aid research, there have been some amazing advances in prosthetic science. People can and do have robotic arms now, to replace one that was removed and they will work in the same way that the original one did.
We aren't just inventing stuff for the sake of it, or for some imagined future goal. Most of those recent advances will have immediate applications.