I think we couple as a cultural habit that insists on it because of paternity assurance and heredity laws. If you want a child, prepare your life so that you can support it because fathers are absolutely no guarantee to be helpful and most often use child custody battles as punishment because the cow lescaped the barn. It's not worth any of that, chances are that you will wind up raising your child alone anyway. This has been the trend in Europe. Can the US ever have that kind of family peace if we stop treating women like barn yard breeders?