The sperm kings of America are exhausted.

These men are flying all over the place. They are shipping their sperm with new vial systems and taking the latest DNA tests because that is what women want now. Sure, they can talk on the phone, but they say it has to be quick because they are driving to Dallas or Kansas City or Portland, Maine, in time for an ovulation window. They would like to remind me they have day jobs.

“People are fed up with sperm banks,” said Kyle Gordy, 29, who lives in Malibu, Calif. He invests in real estate but spends most of his time donating his sperm, free (except for the cost of travel), to women. He also runs a nearly 11,000-member private Facebook group, Sperm Donation USA, which helps women connect with a roster of hundreds of approved donors. His donor sperm has sired 35 children, with five more on the way, he said.

“They realize this isn’t some taboo anymore,” Mr. Gordy said.