Additionally, Smith says, men are now more keenly aware, thanks to research, that men over the age of 45 have a higher likelihood of passing on genetic defects or putting their partner at risk for birth complications. They’re also more concerned about mortality, Smith says. “We find that some [Dadi customers] work dangerous jobs, like military or police force, and they want to bank sperm in case something happens.”

Joseph English, a 39-year-old product designer from Boston, opted to freeze his sperm with Dadi after discussing the effects of hormonal birth control with his girlfriend.

“We started talking about alternatives to condoms and looking into options, and she told me about her previous history with IUDs and hormonal birth control,” English recalled. “It just sounded terrifying. I didn’t like the idea of her having cycles that were hard on her body or doing something that might affect her physiology.” Although the two are happily child-free at the moment, English thinks that’s likely to change within the next five years.

English also wanted to look toward the future in a “responsible way,” he said. “Professionally, I’m in a brutal field with a lot of 90-hour workweeks. I know that can have an impact on trying to get pregnant and have kids, so I wanted something more foolproof than just relying on my own aging body.”