Considering the fact that Spartan boys began training in military barracks at age 7, and their full time occupation was generally as a soldier, I would chose to live in Athens. Most city-states were often at war, making no place safe and gentle. Athens though, only required 2 years of military service at age 18. The rest of a persons time was spent in economic ventures. I wouldn't want to live in a place where the men's predominant undertaking was fighting.