Watch Sister Wives on TLC. Kody has four wives and now 20 children. They live in four separate houses in the same cul-de-sac in Utah. I personally like the show. Would I ever want that for myself? No. But if the dynamic fits their family, I say leave them alone. None of the wives are children. All are in their 30's or 40's. The wives get along seemingly well and they each have a special ring for one another, outside of the wedding bands they all wear.
Disclaimer: I am only responsible for what I say, not what you choose to understand.