I find this posts, and all the comments quite ironic. People always assume that small families are the only way, and how it has always been. So, not!
My grandmother came from a family of 10 children. She was the oldest, and got married at 16 to get away from the farm and all her duties cooking, cleaning, babysitting, oh and yes, pulling the plough! I can never think about that without a shudder. And glad that my parents also lived in the city.
Ironically, my grandmother's family all turned out of be healthy, happy and strong Christians. Not a divorce among the ten, and an amazingly close extended family. So was that an anomaly? Nope. And none of them got pasts grade 12, except my grandmother who was too busy working to go to school. She eventually taught herself to read in English and Ukrainian, using the bible.
Meet my mother-in-law! Also from a family of 10 children, she had the good fortune to live in the city, in a 3 bedroom house. The boys slept in one room, the girls in the other, and the parents got the third. Oh and my MIL was the second youngest, and really never outgrew being babied, although her younger sister did. They all grew up to have happy marriages, good jobs and nary and divorce and they were all very close to each other. They have all passed away now, except for my MIL who will be going home soon, as Alzheimer's has got her by the throat, as it did one brother and her father. One interesting insight was that my husband's grandmother apparently told my MIL one time, "Do you think I wanted all these children?" So contraception was a big issue in earlier generations.
My parents, both came from families of 6, with one girl dying in both families of pneumonia as pre-schoolers. No antibiotics. Both my parents grew up during the depression, and it affected them differently. My father was the only boy, in a Ukrainian family. He was sort of the "promised" son. So, between my grandfather's job, the store, the boarding house and the rented homes, my father did not suffer. He and his sisters grew up happy and healthy, with close relationships with each other. My father was not a Christian till he turned 82, just before he died, but he knew the gospel, when it was preached to him. One other sister is an agnostic, the rest are Christians in various denominations. And they love Jesus!
My mom's family was very poor, living on a rock farm, unlike my great-grandparents who arrived early enough in Alberta to get the some of the best land in the world. My mom's parents couldn't make it, my mom was receiving food supplements at school during the depression. They moved into the city. Her family is not as close, but the oldest daughter turned JW and basically broke up the unity they had, by refusing to come to Christmas and Easter dinners, to say nothing birthdays. Sometimes my mom is resentful of that! I don't blame her!
So a family of 10 in my grandparent's time, (1900 to 1920) was ordinary, a family of 6 in my parent's time (1930-1940's) was pretty average, although my MIL's family was a bit of a throwback. My generation, the boomer's (1945-early 1960's) was 3 or 4. My parents stopped at 3. This is ironical. My dad was a University professor, and built houses on the side. They were always so tight with money, and giving to us kids. (Turns out they were multimillionaires! You would never have known it by the clothes we wore, the furnishings in our house, or the cars they drove.) So some depression suffering, but they could have afforded many more kids. But, almost no one had big families in those days. One aunt had 5 kids - her last two were twins. and she was scorned behind her back! It used to appall me as a child the way the other adults put her down.)
So, here I am with 4! Well, 5 if you count the miscarriage of a twin. I think there was a baby boom (boomete?) when our kids were growing up. Lots of families with 4 or 5 kids, and not just Christian ones. Playing hockey, going to tournaments, there were mostly large families, and lots of money.
So, my long winded historical explanation of how families have gotten smaller. I honestly don't think money is ever the issue. People have raised happy children, regardless of the money. But caring for them, being there for them? I think that is why people stop. People have hard jobs, big mortgages and bills. They want spare time to relax and pursue their own interests, and a a large family would limit them. The expectation is the kids will all go to college, and the parents will have to pay for them. (Three of mine have graduated university, only my daughter was helped with tuition and expenses, because we didn't have money for the older ones. They both got scholarships, academic, sports and based on need, to get them through.
I know my parents got very "bored" with us as we got older. Let's face it, there was no farm that needed workers. So we had to go be in the sports my parents were in - golf, swimming, and badminton. That was family time. I think I am more emotionally broken because of the lack of support I got when I was struggling, than any of those big families went through. Then there is the fact, that kids support each other in families. Mine played street hockey, basketball and baseball outside, along with the old traditional games like hide and seek, tag, etc. I couldn't do that growing up, because I had no siblings close in age, neighbours that were nearly by (these fancy subdivisions mean you are miles from the nearest kid!) My kids have always been there for one another.
So is the OP asking whether we think they should "interfere" with God, by using some kind of contraception? First, not getting where devices or pills that stop contraception is wrong in the Bible. Are you Catholics, and rhythm hasn't worked? I checked not interfering, and I think that was a wrong choice in the poll. I used contraception at various times, like when I was going to University, and sometimes it did not work. So, I did not interfere by having an abortion. That is what I meant. I started getting very sick after my 4th child, so we decided to end further children, although I do regret losing the twin, and not having more.
I don't see that not having children is against God's will for your lives! You have chosen to have a lot of children, that is fine. But at this point, take care of the ones you already have. A vasectomy is an easy choice, and you will not regret it!