When i first killed someone in DayZ back in the day, when it was just the ArmA 2 mod and all the hype.
I finally found a gun and started to learn my way around the zombies, when i heard a player in a bush nearby the hospital in Elektrozavodsk. I thought he was probably out to get me, so i emptied my Makarov clip at the bush and shortly after heard the fly noise they had put to mark dead players.
As i searched his body with my heart pumping like crazy i found him to have nothing but a can of beans. I felt profoundly shitty in that moment because he was just like me at the time. Some new guy playing a tough sandbox multiplayer-game, where everything and everyone can kill you. He probably didnt even hear or see, where he got killed from, just like it happened half a dozen times to me before.
I showed cruelty to someone in whose shoes i'd had demanded mercy.