I have three children. 
I have 1 boy and 1 girl.
What made you decide to parent?
The idea of of promoting and supporting the physical, emotional, social, and intellectual development of a child from infancy to adulthood
Did you plan for and try for your children? 
No. 2 is enough foe me and my wife.What about you?
I'm satisfied. 
I believe Parenting skills vary, and a parent with good parenting skills is more suitable to have a lot of kids.