I think i can answer this one..
I have 2 adult children 25 and 27 with 2 grandsons and 1 grand daughter
and a 1 yr old boy myself..
the answer is that a child at an older age changes life's quality and value greatly, mostly for the good.
Older parents are more appreciative of what a child brings to their life and makes the parent more interested in taking care of them self.