I, too, am guilty of participating in this form or self-aggrandizement.
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I later learned, from soldiers who'd entered the military a decade before me, that they thought similarly about me; back then, (in the days of the draft) drill sergeants used beatings and the threat of beatings to motivate trainees and since my drill instructors weren't permitted to touch trainees, I was—obviously—not as tough as they were.
It’s human nature—the need to feel superior through negative comparison.
A nomadic tribesman crossing the frozen bearing strait once said, ‘Kids today...they’ve got no respect...they're too soft.’ That hunter-gatherer was only repeating something he'd heard his grandfather say. Without being asked to, these derogatory sentiments have left every adult mouth for as long as human mouths have formed words. (Strangely, some have forgotten they are echoing their ancestors words...spoken, about them, a generation ago.)
Parents should worry if their children haven’t been arrested by the time they turn sixteen. Being a juvenile delinquent is a birthright and as much a part of healthy adolescence as smoking cigarettes or getting pimples. — John Waters