Wonders never cease!
I'm 50 and my Father lived as a teenager during the depression.
(Just think about the piles of trials my Mother went through during her golden years....)
Huh? Now I'm corn-fused. My Grandpa was born in 1915. He was 22 in 1937. The Great Depression started in 1939, did it not? So he was 24.
Grandpa married Grandma December 15, 1934, when they were both only 20. My Dad was born in 1937, so my Grandpa was only 23, not 25 as I stated earlier. Sorry!
I'm my own Grandpa, LOL!
So...your Grandparents waited a bit longer than mine to have kids, that's all.
I still bow to your four long years of gained wisdom over me, though, LOL! :)