It is true to say that the first kill can influence the whole future career of a fighter pilot. Many to whom the first victory over the opponent has been long denied either by unfortunate circumstances or by bad luck can suffer from frustration or develop complexes they may never rid themselves of again.
Humanity is not without answers or solutions regarding how to liberate itself from scenarios that invariably end with mass exterminations. Tools such as compassion, trust, empathy, love, and ethical discernment are already in our possession. The next sensible step would be to use them.