In a situation that requires stealth, when no gun powder is available, no shells, maybe no guns/rifles etc, this could make a big difference in survival situations.
Perhaps the coolest weapon ever invented by palaeolithic humans, the atlatl is the first lever, as well as weapons system and complex tool invented by ancient Man. The name comes from a combination of Nuhatl indian words of Central America meaning "Water" and "to throw" from its use as a fishing weapon, though separate examples are known from almost every continent, except Africa and Antarctica.
So powerful and effective was the Atlatl that scientist and scholars speculate that it, along with the overkill tactics so common to the human race, caused the extinction of the woolly mammoth in North America before the end of the ice age.
And yes, even young folks can have enough power to bring home the bacon or protect the homestead if necessary. A traditional atlatl is a long-range weapon and can readily impart to a projectile speeds of over 150 km/h (93 mph).