Misery you build by comparison will write your next forty years as surely as any enemy army.
An Egypt that existed nowhere but in recollection got held beside sand and thirst, and the comparison did damage neither place could do alone. Bondage remembered as plenty, the wilderness felt as a grave: the meaning assigned set the emotion, the emotion produced a verdict against the men in front, and the verdict produced a refusal to go up.
The conditions were hard, and the wish for death came from the gap rather than the heat. A generation that will not change its blueprint spends its years in the very wilderness it swore was killing it, and four decades of wandering are the compound interest on one refusal.