User blog comment:Fbhuvjhvbnvfdkv hfd/KS - Kill steal or Kill secured?/@comment-1330314-20140514023247

I think the issue of entitlement goes both ways: people who type in "kill secured" often follow the mantra that the only thing that matters in a kill is landing the last hit. I have occasionally run into people who have deliberately held back on their burst -- to the detriment of the rest of the team -- until the target was low, whereupon they let fly and got the kill. Similarly, I've seen players swoop in to get the last hit in a duel that their teammate was clearly winning. A big part of why certain players get mad when someone else take a kill they were aiming for is because of the huge discrepancy in contribution: they may have used all of their spells, maybe their ultimate, item actives and summoner spells, in order to kill the opponent, potentially sacrificing a lot of health in the process as well, whereas the player landing the killing blow may have only used one basic ability or even just an autoattack. It's like a jungler coming into your lane to tax a wave without ganking: sure, there's no rule explicitly assigning minions to players, but it's still a rude and harmful thing to do. Aside from the negative consequences this can have to player progression in the long run (the player getting starved of gold may lose against their opponent, who may then get out of control), it's also harmful to the team dynamic: it's not particularly healthy if you've got an opportunist on your team holding back until they can clean up a fight, or if the vast majority of kills on your team gets sucked in by a single teammate (even if they're the carry).

Obviously, this is just one case out of many. Most of the time, supposed KSes are just honest mistakes, or even just properly executed kills in the middle of heated teamfights or chases where the target was at high risk of running away. Often, the person crying about getting KSed is being an entitled child, and didn't do anything to deserve the kill any more than their teammates. However, situations like these are not the kind you can just lump together under a general rule: all of this depends on context, and while clearly the term is being overused, there are sometimes clear occasions where whomever took the kill was being bad mannered. Complaining about it certainly won't give the gold back, but it's cases like these that make playing with certain teammates unpleasant.