I totally agree with your opinion about the advantages of replacing robots. One of things you said was that criminals can get more appropriate punishment. I think this is necessary in our society. It is unfair that you got punished differently even if you committed the same crime. And some people even do not get proper punishments with unreasonable excuses. I think much of these can be resolved by using robots. I also thought about what robots can do, but I didn't think of this. Reading this, I knew things that I didn't know and I thought about it again.