I get that we are establishing this to be a brutal world where no weakness can be shown. Fine. But you're still trying to create drama that appeals to an audience that does not live in that world. When a character kills like it's goin' out of style, do not ask me to sympathize when they themselves - or someone close to them - is being threatened with death. 'Cos that just makes them hypocrites. They're saying "This is the only death anyone should care about because this one adversely affects me." And again, that's fine if we're supposed to laugh at this character or consider them a selfish bellend, but not in a protagonist in a serious work. In that case one would expect this behavior to eventually bite them in the arse and be a flaw they need to overcome.
So yes, I think my problem with The Last Of Us and Uncharted is that they're too easy-going with death. And not just in cases of murder; characters are a little too eager to put themselves in mortal danger, and on a couple of occasions, off themselves directly. You must realize, death is something that carries a lot of weight and in a dramatic work, you have to let that weight show. You're not just removing an inconvenience, here, you're destroying a consciousness, everything that he or she ever was, is or will be, and destroying the lives of their dependents. Forgive me for being so condescending as to feel I have to explain what death is to an adult audience, but from some attitudes I've seen in grown adults, I really do wonder.
I mean, I'm against the death penalty not necessarily out of sympathy for murderers. I'm against it because (1) I believe in a justice system that puts victim compensation first, rehabilitation second, and punitive revenge as distant a third as it could possibly get. And (2) because death is a line that cannot be uncrossed, and is something we are hardwired to desperately avoid. If you establish to someone that they will be killed if they are caught, they will do anything to avoid that, because things cannot possibly get worse. To a man who has committed a murder, it makes more sense to try to kill everyone who could possibly get him convicted rather than turn himself in; at least that presents a slim chance of survival.
A saying I'm fond of is "Blame the audience, not the author". Rather than consider games full of killing to be in the wrong, here, I might invite you to consider what is wrong with our society that such games find a large audience. Why are we all so keen on death? Could it be that everyone, deep down, shares my belief that the only quick solution for humanity's problems is to kill a random sampling of about one half to two thirds of the world's population, grind up their meat and feed it to the remainder?
And before you say anything, of course it'd be a humane slaughter, and of course I'd include myself in the lottery, I'm not a monster. Knowing I'm going to be fed to starving children? I'd relish that. 'Cos for whatever remained of my life, you would not be able to guilt me into shit. "Do you care about the environment, sir?" "Sorry, can't donate, I'm off to gorge myself at the pancake house. It's for the kids."