Ultimately, my son may decide he doesn’t ever want kids (and of course, there is a possibility that when the time feels right he won’t be able to have them). Either way, I will be okay with any decision he makes that feels right for him.
I've been to hell and back with people telling me I will change my mind about not wanting children. I've written many articles about it.
I love how you are accepting of your son when he says he may not want to be a father.
Being childfree by choice is a valid and beautiful experience in life.