I find it pretty funny that despite being a witcher I have spent most of my time hunting down deserters, brutally murdering them and stealing their meager possessions
Its not murder, its self defense. I think of it as me wandering through minding my own business when a vicious group of bandits are set upon me and try to rob me for my meager possessions -- I gotta defend myself. Its also not stealing, after they're dead I may as well help myself to their goods since they dont need them.