What if we already are robots?
What if the conversion happened without us noticing it?
All that medicine doctors give you when you are sick, or whatever.
Maybe we already are robots!
But all joking aside I don't think there will ever be a straight conversion, I think people would have the choice whether or not to go the way of the "borg". Or maybe they won't have a decision, the way the country is going we might have free will or choice in a few years!
Like the Matrix
I feel that by the time we can put your brain on a hard drive, we will probably be making our own brains and organs.
Maybe put you in a robot if your get to injured to survive.
But yea I think there will be a time when we can grow kindeys or instantly cure cancer. Allthough I also believe that something new and better will wipe everyone out like CanAids or a futurestic plague or asteroid.
Also your brain is in your body your head, I feel without actually putting your physical brain into the robot it will not be you. It will only be a robot with your memories , ambitions, personality and emotions but it will not be you it will be a computer/robot like you.