Yes, it is not uncommon for individuals to become grandparents and then have additional children afterward. In some cultures and generations, having children after becoming grandparents may have been less common or considered somewhat taboo due to various factors such as societal norms, family planning practices, and life expectancy.
In the past, people generally married at younger ages and had children earlier in life, so becoming grandparents in their 40s or 50s was not uncommon. As life expectancy increased and family planning practices changed, it became less typical for people to become grandparents at younger ages.
However, family dynamics and individual choices vary significantly across cultures and time periods. Some families or individuals may choose to have children later in life, even after becoming grandparents, for personal or various reasons. As societal norms evolve, what might have been considered taboo in generations past may not be perceived the same way in contemporary times.
It's important to remember that family decisions are personal and should be made based on what feels right for the individuals involved. Society's attitudes and norms may change, but what matters most is the well-being and happiness of the family members involved.