Sparta was a society in ancient Greece known for their military discipline and living styles. The whole system was based on military discipline and following rules. Your faith would have been decided from birth and you would follow that path. Many studies shows their live styles and one or two focuses on what they offered to modern society.
The word Spartan is used today to mean discipline and frugality. Spartans are not supposed to worry about wealth and worldly possessions. They were expected to live a very simple life with only few items of possession. State would benefit from the spoils of their wars not soldiers.
They were strong at the time until Romans have conquered them. So, they didn’t need to build walls around their towns and cities to protect. They needed only few assurances in life as their society was not built on commerce or trade but mainly on military powers. Making a fame and fortune was not encouraged and was not possible in many cases. They were mainly class based and you would have your fortune at birth. If you didn’t it was though luck as you could not earn it later in life.
At the end their rigid social structure may be the reason why they could not survive next to Roman empire where fame and fortune was the reason you were fighting for and you could have it all if you had it in you.
However, there was one assurance in Sparta that the families of soldiers died in the battle was insured by the society. They were supported and taken care of by others. This could probably be seen as early form of life insurance. Because of this system of understanding and funds made available the soldiers didn’t have to worry about well being of their loved ones if they were to die in a battle.
They had similar systems to look after children as well. They were considered responsibility of the state and everyone else. In the early ages they were trained into their new lives. Strong boys joined infantries that Sparta was famous for. And young girls were brought up to be child bearers and home makers.
As the state started to crumble and new initiatives to strengthen it on the face of changes around them failed, the funds dried up for families and discontent resulted in Sparta giving way to Roman Empire. It was a system based on common understanding rather than a commercial operations.