IMHO: If your genetics have allowed you to conceive at a later age, good on you!
Some people say it's better for a species to reproduce later in the life cycle, as it produces a stronger species over time. They say this is due to the fact that organisms with weaker genetic code will be less likely to reproduce at later stages in life.
(Pregnancy at that age, i'm guessing, would be more dangerous for the mum than the baby)