Well, I came from a family that used to have large families - my grandmother lost her mother and two sisters to the influenza in 1918, and she had problems with pregancies herself - Grandpa came from a very large family, and he was the only one with a small family, but it never bothered him - he loved his wife and two daughters. My stepfather's family - Grandpa was drafterd in World War II when his 2nd son was a baby, and he was gone for more than five years. He never got to have the large family he and Grandma wanted.
As for my mother, she divorced when I was a baby, and she did not have time for a relationship as she was a full-time college student and a full-time worker - I grew up with my grandparents on the farm. I had many cousins, and it was like growing up in a large, close-knit family.
Mom did not remarry until well into her 30's and both she and my stepdad decided not to have any children, due to their ages. Stepdad adopted me, and I grew up considering him as my real dad.
I also had many friends with large families (I live in a city with many Catholic churches), and they were all very loving - they grew up with responsibilities around the house and family members - and many of them are very successful - and remain in close touch with their brothers and sisters.
Ive asked them over the years, if they ever felt left, had too many responsibilties or felt this way or that way about their families, and guess what? None of them have any regrets growing up that way. Many of them have gone on to have large families themselves, and I've kept in touch - many of them are very, very happy.
I do know of some that are not exactly happy - but that's the way things go - it's what you make of it. If you feel that you are able to do a good job of rearing a large brood, then by all means, go for it. If you want just one or two, good for you.
It's your decision - your decision to have a large brood or a small family - it's how you raise your kids that counts. Are you able to give love, care and attention to your children? Are you able to teach your kids responsibility, manners, courtesy, and how to get along in the world? Are you able to support your children, no matter how many you have?
Look at me - I had one daughter - I came to admit that I knew I would not be able to take care of her the way she should be able to be taken care of, and I willingly gave her up for adoption. I knew she would be happier with a family that could take care of her, instead of a mother that could not take care of her, and a dad that would not be around for her. I did love my daughter enough to choose the family that would adopt her, and I have no regrets making that decision.
It doesn't matter if you are a Christian or not - it's YOUR ability to take care of your children, no matter how many you have, that does count.
If the Duggans feel that they can provide what the children need the most, love, care and responsibility, then kudos to them.