I am just one of 11 children, it was normal back then (aunts all had 8 and up).
Now days unless you are in farming it is just not acceptable and is frowned on (not that any of those fine people are paying your bills, they just want to tell you what to do and how to live).

I say Congratulations to you and your wife for providing well adjusted children who will be the future of this country and will have their little heads screwed on straight when it comes to the reality of how to work, how to grow their own food and how to harvest any animals!
They are learning things the right way!