Poverty is the root of a lot of problems.
Of course, to hear the rabid right talk, it's people's own fault don't ya know? People just love to be poor and suck off the teat of government.
There are some examples of people who were born into and lived in poverty, who managed to be very successful. The right likes to trot them out in these sort of discussions.
I could, if so motivated, drag out several examples of people who were born into and/or lived in wealth who were never successful and sometimes downright losers.
The bottom line is that being financially and nutritionally secure gives a child a better chance at success. When a child goes to bed (or school) hungry, they really aren't able to learn properly. There are more of them than most people know.