Although I married quire young, I was 28 when my eldest child was born,. All my daughters were well on their ways in their professions before having children.
My eldest child will be 52 this year, the young (twins_ will be 46 - had my youngest son still been alive he would now be 44 years. My eldest g.child will be 21 in a couple of months time, and my youngest is just coming up to her 9th birthday.
I have friends of my age with several great g.children. Not sure if I will ever live to see any of these, which does not worry me one little bit. Would like to live long enough to see my elder g.children graduate.