However, there have been State laws about alimony and child-support as long as I remember (I'm 66). We now ignore those laws and let the sperm donors just walk away and society has to deal with the results.
Don't know any employed "sperm donors," eh?
Don’t get me wrong; I am not a dead beat dad fan. We are raising a grandchild that is better off with minimal contact with the parent, so dad, or even sometimes mom a child is better off without. I am simply saying be careful.
On a similar chord; people, especially on this site, are quick to call for the authoritarian involvement in so called animal abuse cases. This is another be careful area. In my opinion, animals should remain property. Be darn careful with legal being a care giver or having someone else determine what care should be.