'If you grow up poor then most of the people in your family are poor…'
Accordingly, even if you “make it out” and arrive in the middle class…you will likely be less financially secure than a person that earns the same income but came from a middle class family. That person can put all of their extra money towards buying a home…retirement, additional degrees, starting a business, and sending their kids to college. But the poor person who earns a middle-class income might use a significant portion of their income keeping their parents’ heat on, helping their little brother go to college, or buying back-to-school clothes for their nieces and nephews. This makes it much harder for poor and working class people who become middle class to stay that way.
much more, here.