One of my pet peeves is when women refer to the father of their children as sperm donors. Seriously? You had sex with him. Yes he put his sperm in you and yes he may not want to be a father but he's not a sperm donor. You don't get child support from sperm donors, they are not the daddy, they don't get visitation, they don't have to go to court to fight you. Sperm donors give their sample to sperm banks who then sell the sperm to be implanted into a women to create a baby. If you had sex with a guy and he doesn't want to be a dad or pay child support or see the child he is not a sperm donor, he is your baby daddy. Could also be your ex husband, ex boyfriend, ex fiance, etc but he is not a sperm donor.