There is a reason the military actively recruits 17, 18, 19, and 20 year olds. Young people have nothing, so they have noting to lose. When you have nothing to lose, you tend to take more chances. \ Young people heal quickly, so they think they are invincible; they don’t think about their mortality. Young people are impulsive; they tend to do things without thinking about the consequences. When they do think about the possibility of making a mistake, it doesn’t bother them since they think they have a lifetime to correct the mistake.
For these reasons, they make good warriors. They tend to follow orders without hesitation to consider the consequences of the orders. When the leader says, “Charge that hill,” they charge without considering they may die.
However, once people acquire money, property, and families and have something to lose, they tend to hesitate before entering into a risky action. Once injuries start to heal more slowly and become chronic, people are hesitant to incur more injuries.