Actually if the biological father died, Social Security would support his children. That's one of the reasons he pays into it. And, guess what, it won't go into arrears, either.
Not that I don't agree that the CP should work. Heck, I worked to raise my daughter and was alone for 5 years. It was tough and I didn't even have to pay for day care - Grandma and Grandpa were happy to take care of her during the day. But dear old Dad must do his share, too.
My ex tried to claim that he had to quit his job because I had been so mean to him and made him so upset he couldn't work <sob>. The fact of the matter is that we had sold our house and he had gotten a large sum of money just like I had. I invested mine in buying a little house for my daughter and me and he quit his job, moved in with his girlfriend, and invested in beer. He was a plumber but claimed he couldn't get a job because he didn't have his journeyman's license and there was nothing else he knew how to do. The Domestic Relations officer looked him dead in the eye and said, "Mr. _____, can you pump gas?" HEE!!! I though he was going to drop through the floor.
So, IMHO, both parents should work and both parents should provide funding to support their children.
Laurie