Seems contradictory to your belief that we are more than the sum of our parts.It is just a just a bunch of organic molecules, not much different from any other molecules.
The casual discarding of life is a very human quality. Humanity has always engaged in genocide, war, carpet bombing, capital punishment, etc. Most recently we've been engaged in a fight over how much to limit the spreading of Covid. Do we ban vaccination and mask mandates even though the science says they will save lives? There is no shortage of hypocrisy here.
Incorrect, the casual discarding of a dehumanized life is necessary to eliminate conflict in the brain and consistent with the rationalization you just made. So is your inability to see your hypocrisy in this.