Why did Spartans develop such a rigid and militaristic society?

Spartans developed a rigid and militaristic society primarily to ensure the dominance and survival of their state in a hostile environment. Facing threats from neighboring city-states and the need to control a large population of enslaved Helots, they prioritized military training and discipline. This focus fostered a culture of obedience and resilience, enabling Spartans to maintain social order and military effectiveness. Additionally, their belief in the superiority of the Spartan way of life further entrenched their militaristic values.