The inside of Wall Sina was known as a safe place. The safest place. Somewhere the titans could never reach, due to the protection of all three walls and the Military Police.
That was true, the high class residential areas were rather safe from the titans. Even when the horrific news of Shiganshina's breach had spread to the innermost sections of the wall, most people simply laughed it off with a quick "oh, how devastating," or a snide dismissal such as "it doesn't matter, they chose to live in those bait cities." The blatant ignorance that would be quickly called out anywhere else was unnoticed inside the community of the rich. Young children, raised by spoiled housewives, had no idea that any sort of evil existed in this world. The people inside were too ignorant. Too complacent. Too sheltered.
Despite all of this coddling, the one thing the society lacked was innocence. Even the highly regarded Military Police was full of indolence, corruption, and incompetence; and lacked discipline, resolve, morals, and bravery. From the eyes of those living in poorer areas, even middle class areas, it was obvious that the only reason anyone would join them was to get a free pass to the interior. This meant security, a guaranteed comfortable life, all with the honor and reverence that came with being a soldier. Hundreds of people spent years honing their battle skills to get as far away from the danger as possible. The rare few that actually tried to fix the broken, corrupted system were quickly beaten down and forcibly assimilated into their twisted culture.
Within Sina, the carefree lifestyle meant that nobody would willingly join the military except for those with some sort of grand, heroic military genealogy. Even then, the end result was always another stuck-up, overconfident young member of the Military Police who was praised for battles they had never experienced.
That was one of the constants of life. The ones who were born into a pleasant life always looked out for themselves, trying to maintain their pride; while those who were not as lucky had to fight tooth and nail for their survival in the cruel world. It could be said that the only thing worth having from them was a sense of family, a sense of love, a sense of belonging. The interior didn't have that. Most left their children with someone who was only there because they were paid. The "lucky" ones had at most one parent who stayed with them, who raised them in vain as someone pretty and worthy enough to carry on the family name. Conformity was key here. Any child with a sense of self might rebel, or realize the awful truth, staining their name forever.
Attempts at real friendship were shot down, because personal relationships get in the way of business deals.
Adventure, fun, and curiosity were not allowed. It was the unspoken rule of parenthood.
"Why is your daughter not wearing a dress?"
"Why is your daughter running around?"
"Why is your daughter talking to someone of a lower class?"
"Keep your child controlled."
"Keep your child inside."
"Keep your child away."
"Behave."
"Do not go there."
"Do not do that."
"Do not."
"No."
The restrictions were so tight that it felt like you were suffocating. But nobody dared to leave. Where would one go? After living such a lavish, extravagant (albeit extremely sheltered) life, how would anyone be able to live a life any less than that?
"Should I live my life as I really want to?"
It is a person's most important decision.
Too bad most don't even realize that they have a decision.