I adopted my daughter when I was 47 years old. She was 7 1/2 months old. While I was old enough to be her grandmother, she was my first child. I found that I had several advantages over young parents. I had an established career and was moving towards my highest salary during my career. Because of this I didn't have to worry about loosing my job or not getting a promotion when I needed time off to care for a sick child.
Another advantage was that I was financially comfortable and had the funds for the very expensive first years of diapers, formula and child care.
Having had observed my friends raising their children I was able to learn parenting techniques and also what not to do. A great advantage.
On the downside, I didn't have the energy that most young parents have. This didn't stop me from attending most sports practices, games and other activities. In fact I felt keeping busy with my daughter kept me young. I'm now over 60 and my daughter is a freshman in college. I don't regret for a minute having a child young enough to be my granddaughter.