The Rule of 35

It occured to me that if you dont have children by the time that you are 35 you will never get to know your grandchildren. This is based on the fact that people are having children later and later in their lives , if we mark the age of 35 as a mid point in our lives. and we assume that our own childrens time it will be 'normal' to have children later than we do i.e. around 35-40. We can estimate that we will become grandparents between the ages of 70-75 . Pretty soon towards the time we pop our clogs. Cheerio!