I know a couple that didn’t have kids. When they got older they told me that the massive amount of money they had was meaningless to them and regrets not having kids.

One became a CEO for a pretty large Taiwanese company but at night he worked as a professor in a nearby college . The wife did something similar. A high profile lawyer by day, a professor at night.

They eventually ended up “adopting” young adult as their daughter they both met in school that was putting herself through school.