nishtdayngesheft: If a MO person had actually told you that, I’d say you have a valid point. However, I doubt anyone actually told you that.
My wife was actually told by more than one chassidic woman that the only purpose for marriage was to have children. My wife asked her, “When you are no longer able to have children, would you tell your husband to divorce you and marry some 18 year old girl so he could have more children?”
The woman responded that no, she wouldn’t like it, and maybe she needed to question what she’d been taught.