How Ethical is it to kill someone with Armed Autonomous Machines?

I’m watching a show on current and potential in the works robotic warfare, this program is focused on the US DOD…

The current UAV’s with hellfire missiles….Someone sitting in the US killing people in another country via a “video game” type platform….

The “Swarm” program in the works where multiple mini drone “force” are deployed in a area… A base command is given and the “collective” decides how to carry them out and strike…
And so on….

I’m all for minimizing loss of life….But this is absurd…

With the world the way it is… Machines should be used to help humanity…. The medical assistance, Food delivery to country’s in need, helping people in earthquake sites, helping people trapped by floods, And so on….

Not kill people,

Continuing down this path is detrimental to the progress being made in AI and robotics.

And worse of all it will de-humanize war, little to no compassion, possibly more collateral damage, How much remorse can someone feel from pushing a button….and in the end the biggest design flaw that will be “fixed” will be the human element….

And than we will be screwed….