I know I want to raise children and have a family, but my disparate feelings toward pregnancy, the biological mechanism by which these lofty goals are achieved, have started to worry me.

For the first time in U.S. history, millions of children (and their parents) are actually vulnerable to having less time with their grandparents than more. A revolution is happening in the way generations are connected in America.

Full disclosure: I am an older mother. My first daughter was born when I was almost 38, and my youngest entered the world three days before my 41st birthday.

Like quite a few people I know, I had my first child in at 39. My maternal grandmother had a child at 39, too, but that girl was her eighth baby and her last.