Susan Sontag said this quote

We - this we is everyone who has never experienced anything like what they went through - don't understand. We don't get it. We truly can't imagine what it was like. We can't imagine how dreadful, how terrifying war is; and how normal it becomes. Can't understand, can't imagine. That's what every soldier, and every journalist and aid worker and independent observer who has put in time under fire, and had the luck to elude the death that struck down others nearby, stubbornly feels. And they are right.