For those who escaped a low income upbringing, what culture shocks did you experience?

How vastly less common casual violence is, even among men. Where I grew up it was just a thing that happened constantly, a background hum to which you grew accustomed¹.

The middle class and particularly the upper middle class and above just does not work like that.

1. The movie Good Will Hunting portrays the casualness of violence in that type of environment pretty well. Winter’s Bone too.