It's an interesting idea. Some personalities will only have children if they're forced by circumstances. This was the norm back when contraceptives didn't exist, and cultures (probably out of necessity), structured themselves to compel people to have children.
Another interesting idea, is that over the long-term, cultures that allow their members the freedom not to have children, may be overrun peacefully or forcefully by those that don't, or that at least, provide larger incentives to have children. Moreover, again over a long enough time horizon, people's who naturally don't have the inclination to have children, will disappear from the gene pool, making having children (all other things equals) the most common and culturally sensible option.
Another interesting idea, is that over the long-term, cultures that allow their members the freedom not to have children, may be overrun peacefully or forcefully by those that don't, or that at least, provide larger incentives to have children. Moreover, again over a long enough time horizon, people's who naturally don't have the inclination to have children, will disappear from the gene pool, making having children (all other things equals) the most common and culturally sensible option.