I live in the U.S. None of my male friends and acquaintances between 25 and 40 have children.
They are all of different ethnicities including Black American.
The unifiying fator is that they all have a minimum of a Master's Degree. Education is often a strong delaying tactic for having children.
This makes perfect sense. In relation to my post above, I met all of these men in college or at work.