When you're pushed, killing's as easy as breathing.
— John J. Rambo, Rambo (2008)
Mizo: You have a habit of leaving people to die, don't you?
Jak: You get used to it.
With every man I kill, the farther away from home I feel.
— Capt. Miller, Saving Private Ryan
So what's that make? Twelve, fifteen counts of Self-Defense With An Automatic Weapon? I'm losing count, and I don't think the cops are going to buy it. I better just keep quiet about this when I get out. I'll have to fight my urges to brag about it when I get a new job.
Just. Gets. Easier.
— Guardian Medivh (possessed by Sargeras), Warcraft: The Last Guardian
Dryden: How did he die?
Bond: Your contact? Not well.
Dryden: Made you feel it, did he? Well, you needn't worry. The second is— [gets shot by Bond]
You know the first time, the first time you do it? You're scared. Blood's pumping. Your head's going a hundred miles an hour. You feel such power and strength. And after you get that feeling, you just want to do it again and again. It's like a drug. Each time it gets a little easier. First girl, I couldn't look in her eyes. I had to turn away, but now, it is so fucking routine. I can look right at you, I can stare right through you, and I can pull this fucking trigger.
— Jack Carter, The Hitchhiker
Unfortunately, killing is just one of those things that gets easier the more you do it.
— Solid Snake, Metal Gear Solid
I don't enjoy killing, but when done righteously, it's a chore like any other. And practiced hands make for quick labor.
—Joshua Graham, Fallout: New Vegas
Now if you have a taste for this experience
And you're flushed with your very first success
Then you must try a twosome or a threesome
And you'll find your conscience bothers you much less
Because murder is like anything you take to
It's a habit-forming need for more and more
You can bump off every member of your family
And anybody else you find a bore
— The Police, "Murder by Numbers"
Capt. Kanril Eleya: At ease. This your first time in a real fight?
Ens. Arak Esplin: Yes, ma'am.
Eleya: How are you feeling?
Eleya: Yes, I'm serious.
Esplin: During the fight, I was scared.
Eleya: And now?
Esplin: Numb, maíam. How am I supposed to feel? I just killed people.
Cdr. Tess Phohl: No, you didnít; I did, but thatís not important right now. Youíre feeling about what the skipper and me expected. Right, maíam?
Eleya: (nods, puts hand on Esplin's shoulder) Youíll be fine. Iím not going to rely on clichť here: the first battle isnít the hardest, itís just the first. And frankly, as pathetic as that one was, I guarantee the next will be harder. You do your job and work with your crewmates and you get through. The rest is up to the Prophets.
(If you choose to Mercy Kill Cornelius Slate)
Elizabeth: Do you ever get used to it? The killing?
Booker DeWitt: Faster than you can imagine.