There are two ways of looking at this. My parents both died when I was still a child. They were not pensioners. Even though it was traumatic losing both parents, I would not have been born to anyone else given the choice. So, what I am saying is, if you have good parents, you value them for as long as you have them.
On the other hand, this woman is going to be an elderly woman raising a child and this is bound to be tiring and stressful for her. In addition, the child is likely to be quite young when both parents are dead or too elderly and infirm to fulfil the parenting role to its fullest extent. In addition, they are more than likely to miss out on the role of being grandparents.
Personally, I wouldn't dream of bringing a child into the world at the age of 63.