Making war feel less risky to politicians who want to wage it for domestic jingoistic bullshit reasons[0] makes war more likely to happen in the first place, which costs lives.
Also, bold of you to assume you're going to be winning. Does the excitement about this new tech hold up if you consider it from the perspective that it's going to be used against you and your troops?
[0] as opposed to actual defence against invasion - despite the euphemism commonly used by western governments for their military political departments. And what %age of military actions in the last 50 years that your country was involved in count as one, or the other?
You're making so many assumptions that you're attacking a scarecrow. I think that more precision (which may make war "easier") makes up for it in total lives spared. How are militarized robots worse than a JDAM? If I didn't believe that it is more merciful on the whole then I wouldn't take this position.
FML, that's dark.