We have become used to thinking of heroism as something that simply happens to people; indeed the word has been in a sense cheapened by the modern habit of calling everybody exposed to any kind of danger, whether voluntarily or not, a “hero.” Soldiers — indeed all those in uniform — are now commonly referred to as “our heroes,” as if heroism were a universal quality shared by everyone who bears arms, or as if it were an accident, not a vocation. Even those who die in terrorist attacks, and have thus had the bad luck to be in the wrong place at the wrong time, are described as “heroes,” though given the choice most of them would no doubt have preferred to be somewhere else when the blow was struck.
From Hero – The Life and Legend of Lawrence of Arabia by Michael Korda.