Oh good lord. Round 1.57865448987 million of this annoying shit. I'm not against FS or PA when used in certain situations. I'm against it when people abuse it. Figure out how to support yourself and your kids. If you can't do that, you shouldn't continue having kids, which most do. It's a no end situation.
I try not to judge. I've been on FS before so I know how it feels to have everyone scrutinizing, not only the groceries you're buying, but they're also looking you up and down. Judging what you're wearing, what your kids are wearing, what type of phone you have (if you have one), checking to see if you have your nails/hair done, checking to see if you're wearing make-up or jewellery and some will even follow you outside to see what kind of car you get in.
Personally, as long as the kids are healthy, I don't really care how they are supported as long as the parents are not abusing the system. Sometimes people need a little help until they get back on their feet.