Nope, we have one girl and one boy.
Even with just the 2 we run around like crazy with them.
Often their sports/actives overlap. It's important to us to go to see their games/concerts/recitals etc. if we had even 1 more, there's no way the 2 of us could be in 3 places at once.
And a family of four is just so convenient, traveling, going out, etc.
I do admit, as I am one of 3 and my husband is one of 3, when I see pictures of 3 siblings together that seems more "right" to me.
But never wanted that 3rd. They're 13 and 15 now, and I'm 43, so no way would I have another now even if I wanted to. LOL