1) It's more likely to get killed if you have criminal gang member in your family. So yes, mom and baby sister are better off without such "help".
2) Why do you equate greed with being rich? These are orthogonal concepts.
3) Yes, it's hard to make right decision when you grew up submerged into bad culture. Fortunately good culture is available too. Even more - bad culture is at disadvantage due to schools, popular mass culture, law enforcement and mutual gang killings.
So in the end the decision of quitting the gang is a matter of personal choice.
2) Why do you equate greed with being rich? These are orthogonal concepts.
3) Yes, it's hard to make right decision when you grew up submerged into bad culture. Fortunately good culture is available too. Even more - bad culture is at disadvantage due to schools, popular mass culture, law enforcement and mutual gang killings.
So in the end the decision of quitting the gang is a matter of personal choice.