Congrats Grandpa!
At 51 most of my friends are or are becoming grandparents like yourself. My FIRST child is due June !st. I wonder if I’ll ever see grandkids. (People tell me grandkids are more fun, or at any rate easier than kids).
I had the big "60" two weeks and a few days ago.
good for you! We are a bit older parents, too. We have learned to know a number of people in the same boat as us (not a bad boat to be in). My father-in-law had his first granddaughter at age 80. He was over the moon, of course. As will you be.