I have no problem at all with the Duggars. I think they seem like happy people that are making a choice that they believe is right for their family. They have the means to care for their huge brood, and their children seem like they will grow to be productive members of society. They are making choices for their family that are- in many ways- more responsible than most of us. For example, they don't have ANY debt; not their vehicles or their house or anything. Also, if I remember right, they built their (huge, yes) house themselves, using many environmentally friendly and sustainable choices.
The only hang up I have with them is when I consider our planet. She's only so big, and can only hold so many humans, and over-population is already rampant and devastating in 3rd world countries. China, for example, had to stipulate their famed "one child" policy for certain sects of their population, and while that policy has many negative and unethical aspects, it DID significantly reduce poverty.
I know of people that don't want any children, or no more than one child, for the specific reason of wanting to be responsible citizens of this planet. Most people that use over-population as a guideline when family planning would say that two is the upper limit- you replace yourself and your partner in the world, but don't actually ADD to the population. I even have a friend who wished for twins her 2nd pregnancy so that she could have 3 children without having to wrestle with this morality issue.
Since I already have three children, I am already over my quota. And adding one more makes me feel like an irresponsible steward to this earth. David is not called- like, AT ALL- to adopt a baby, so the only way we would be adding to our family at this point is by a pregnancy.
Obviously, if you've been reading here lately, you already know how I feel about another pregnancy. If David came home tonight and said he'd changed his mind, I would agree to another pregnancy/baby in a second. I mean, I think I would; recent confusion on the topic aside, of course.
However, the fact that I would have FOUR children would- and already does- nag at me a little. Or a lot, depending on the day. Since I already have three kids, please don't feel like I'm judging YOU in any way for having more than two, because I'm really not. This is just something that I weigh, over and over, for myself in my own life. I think having a 2-kid-maximum for environmental reasons is different too from the prolific 2-is-normal-everything-else-is-abnormal mindset Swistle pointed out. (Here in the comments section, if you're interested.)
I'm wondering- have any of you considered this when doing your own family planning?