It is not about morality in the case you describe but in the potential of having more wars and victims, some of my reasons I dislike the idea are: - in a democ

It is not about morality in the case you describe but in the potential of having more wars and victims, some of my reasons I dislike the idea are: - in a democracy you need to convince the society that they should give their lives so you need to have or invent a good enough reason, this means you can't start a war easy. - humans trust computers too much this days, one example was a person that almost drove over a cliff because Google map told him to do it, he noticed for a while that something is not right but trusted the computer more then himself. - humans can think and most of the time take good decisions and avoid pointless deaths, I am thinking at a Russian soldier that could have launched a nuclear strike because some faulty "sensors" a computer would have just done it. - there was a case posted here on HN where a german pilot decided not to destroy a damaged enemy plane because he saw the enemy pilot and he could not just kill, aka most humans do not like killing where a killer robot would have no problem killing children, wounded soldiers,doctors.