I think you need to grandfather child support. I would restrict child support to the number of kids you had when you applied and then no increase for more kids.
Perhaps we could get a waiver of father’s responsibility if they decide unilaterally to have the kid.
Why do we need child support? It’s just more unconstitutional redistribution of wealth enforced by the state. If a woman wants a man to support her and her children, we already have a system for that (or rather we had). It was called “marriage”, and it was constitutional and enforceable, and even better, it worked!
But no, we’d rather have the new, progressive system of child support to replace marriage. That’s really working out great for us.