ALL of my robot characters: *visibly disturbed*
Collector: ... Allow me to clarify what they clearly aren't willing to say. Rewriting a robot's memory, code, or worse, personality, is considered worse than killing them in robot culture.
Well, code is ok in certain situations, for example if there's an actual problem like constant system crashes, which is why we have robots like data and Liam who are essentially the robot equivalent of a doctor.
So to put it shortly: they're too nice to do that, partly because they fear what would happen if someone did it to them.