In a society without marriage, and without any payment for the work women do (essentially, creating and bringing up the next generation of people), why would any woman have a child for a man? And if a woman did choose to have a child, there would be no reason to name that child after the sperm donor or to establish a relationship between the donor and her child, as the man would only be a hindrance to her independence and ability to find new mates or move for a career, etc.
Not sure why a man would think that’s some kind of utopia.[/quote]
Don’t get married and don’t have kids. Sounds like utopia to me.