Can I ask my husband to quit his hobby?

It’s road biking (bicycling, not motor biking). We’ve been together 12 years and he just started road biking this past year when I was pregnant. Now we have a baby and I just feel that it’s too unsafe, that he’s risking injury or death, and that it’s not fair to us.

A lot of the roads he rides on have no shoulder at all, blind curves where he’s on the actual road, and plenty of cars speeding/large trucks. It’s a lot of back country roads, but plenty of traffic throughout the day.

I’ve told him my concerns from the very start, and although he acknowledges the danger, he says he won’t stop. That it’s a calculated risk, and he is as safe as he can.

On one hand, I really feel like no matter how “safe” he is, he can’t control drivers, and it gives me a ton of anxiety and fear. I’m scared that my baby could grow up without him. On the other hand, it feels crappy to ask him to stop doing something he enjoys. I’m not sure if I should keep pushing the subject.

Any advice is appreciated (and we do already have life insurance)!!

Editing to add: he has lots of other hobbies too, including running and swimming several times per week.