Your perspective indicates perhaps a bit of spoil... I think it's totally fine to not want children but thinking of them as spoiling anything by their existence feels to me as profoundly wrong as thinking of... well, a person as spoiling anything by their existence.
Perhaps he was referring to something more physical as in her body being unspoiled. But I totally agree with you, nobody forces people to have children and the ones who have them by accident and hate it afterwards is clear they have not reached a maturity level or preparedness for being a parent and there's nothing wrong with it at all, people have choices. But ones who consider children spoils or as curses or burdens or thieves of their unmitigated freedoms they used to have prior, it's probably for the better to never have children for they would be neglected or maltreated one way or another.
Thinking of your significant other's body being spoiled by childbearing is almost as bad as thinking of children's existence as spoiling things. Maybe worse.
Obviously, to each their own. But what do you mean by your wife being unspoiled? The way you expressed yourself you make it sound like she's still a maiden.
