As a parent, what I would say is, when your toddlers are racing around and wanting continuous attention, are you as a 68/69 year old going to be able to keep up with them and play with them for the amount of time that they will require without having to give up after a few minutes because you haven't got the energy of a parent in their 20's or 30's. Believe me, young kids do wear you out, quickly. Also, where is the guidence going to come from when this child is going into it's teenage years and it's mother is approaching 80?