It's the future and whining about it is no different than whining about the advent of the rifle or the machine gun or the bow. Your taking the fight away from the human being through a layer of abstraction to keep your soldier alive. The layer of abstraction in this case happens to be a robot, once upon a time it was a gun or a bow.
The people complaining about this are really no different than the Luddites that think warfare should be conduced hand to hand with swords and maces. They wont be satisfied unless their own soldiers are getting killed on the battlefield too. Technology advances whether you want it to or not. Change and human nature are the only things that stay the same.
The machine gun was only a good invention if it was not pointing at you. It helped destroy many cultures, enabled genocide in the name of "civilization" and allowed the west (us) to basically steal land and resources from other people - something from which they have not recovered as yet.
Any technology that tips the balance of power decisively in favour of one group will not stop war, it will ensure war (albeit a quick and bloody one).
Something that allows one side to fight a war without any cost will, I think, result in "bad" things happening.
And do not assume that you will always be at the safe end of this machinery.