What were the advantages and disadvantages of Sparta's military society?

The following were the advantages and disadvantages of Sparta's military society:

Advantages:

The citizens of Sparta bore a great sense of patriotism and each one of them believed in devoting their youth to Sparta. Every single soldier was treated equally as there was no hierarchy in the Spartan army or in the Spartan society for people that were originally Spartiates. Children were trained right from their childhood to become great warriors when they grow up. Women were treated with respect and dignity as they were the ones who produced strong and healthy children and looked after the household when the men were away.

Disadvantages:

The slaves that the Spartiates brought from other city-states to serve in Sparta were given inhumane treatment. The children did not have the choice to choose careers for themselves. They had to inevitably serve in the army and lay down their lives at a young age if needed. Spartan society was violent in nature and did not believe in the philosophy of peace. Sparta did not have a democracy. The king used to be an authoritarian ruler but was accepted by the citizens of Sparta, obeyed, and complied with the decisions made by him. The children that were born weak and unhealthy were mercilessly left to die.