Controlling impulses and delaying gratification are taught/learned behaviors.
All kids and teens make dumb decisions, and think they're invincible. But kids growing up in poverty face cultural problems and pressures that are
part of that poverty. Whether it's not enough adults in their lives, or bad role models, idle time on their hands, living paycheck-to-paycheck....or constant daily struggles of a really crappy life that most of us here can't even imagine.
Poor kids are more likely to engage in all sorts of risky behavior. Maybe it's too hard to "imagine" a long, healthy, productive and happy life -- so they focus on here and now, fitting in with their circle of friends, trying to
feel better and/or numb their pain?
But you don't really care to figure out what causes poverty, or why poor people act in ways they do, in order to help them get out of poverty or break the cycles of poverty. That would mean you'd have to do more than just whine about how they're
taking from the
producers of society, from your holier-than-thou perch, preaching about
character, put that BOOT down, cast dispersions, and walk away.