I'm the youngest. Mom had 7 boys. Two died young, wasn't uncommon back in the 40s and 50s. I heard mom talking to a neighbor about my brother Glenn being an unwanted pregnancy....
So I told Glenn that mom said he was an accident. He and I are only 18 months apart, and we picked on each other pretty hard. So......he goes to mom and asked if it was true.
Mom said that it was true that they didn't really plan to have any more children, as Craig was already four years old, and that was a pretty big age gap.
Then she turned to me and said that was a planned pregnancy.
Because her and dad needed a playmate for their accident.
I never brought it up again.