The excerpt below considers families are in "evolution". I'll have to check with Dawkins, but is "devolution" also a possibility
Complex questions about parental responsibility resurfaced late last year, as Kansas officials went after a Topeka man who answered a Craigslist ad from a lesbian couple seeking a sperm donor. Because no doctor was involved in the artificial insemination, the state sought to hold William Marotta financially responsible for the child when the women split up and one of them sought public assistance. A hearing is set for April.
Many states haven't updated their laws to address the evolution of family structures _ such as same-sex families, single women conceiving with donated sperm or artificial inseminations performed without a doctor's involvement.
This article simply thinks there is a "legal gap" to sort out. Yet there is now a child with a father who doesn't want to be one, and two mothers who have split up (living the liberal definition of marriage, which places commitment to children well below their hedonistic self-interest.) Suddenly now Dad becomes an important substitute for the tax payer, who ultimately funds this mess. Poor kid.
Source: You did WHAT with my sperm?