Reading through this thread has shown me just how personal this is. Some people seem to feel old so young, and say physical ailments would make it an impossible choice for them.
At 39 I feel young - I can run 10km in under an hour, hike, climb, do everything physical without a problem. My parent who are in their 70s still ski, travel, hike, climb, and play tennis against 20 year olds (and often win). I look around at some of the young mums in the village, and they shuffle along, 3 stone over weight, struggling with lifting etc. I will cope every bit as well if not better than them with motherhood.
My consultant said that unfortunately the NHS treats older mothers as statistics rather than individuals. They push for CVS and amnio, when often it is just not necessary. I went private for my nuchal scan so that my risk would be based on my baby's health not my age.
Each to his own, and may we not judge one another for it.