That only encourages breeding for the sake of welfare checks and a life of no work --- and no father for the kids. That leads to too many problems for our society. If single moms don't want to marry a wage earner, then they have no business thinking that others must provide a nice living for themselves.
Well I know there are idiots who would do this, but many wouldn't. My mother got herself off welfare by going to school, and she wasn't a welfare breeder either. Our family went thru difficult times and we had to use the program in the way it was meant to be used. By the way, I've been productively employed most of my adult life(thank the Lord) and I've calculated that I've payed in taxes many times over, the amount of total benefits we received from welfare from 1976 to 1982.
So don't get all stuffy about welfare breeders and cheats, not every-one who uses the program stays on it more than a few years or so!