Why is everybody’s first defense when having a kid , your motherhood or child ? Like I had some kid…

Why is everybody’s first defense when having a kid , your motherhood or child ? Like I had some kid in my class today say “but your a mom” (we were arguing) WTF does that have to do with this convo, I went off .. like you sound dumb af, I got mad ghetto ... lol & the only reason he knows I am a mother is because the first day of class the instructors asked us “why are we here , taking this class “ and i said to better my sons future 🤦🏼‍♀️