If you can plan for two, you can plan for four, or you can plan for 8…planning is not some sort of guarantee, as others have explained to you. I believe there’s a scripture, a parable of Jesus, some guy who plans and builds to store up for himself, and then says something to the effect of, “Take it easy, now, Self! You’ve got it all!” And “Self” dies that night. All the planning in the world did him no good.
Over the summer, I built myself a big pantry in the garage. It is designed so I can bulk shop and save money in the long run. I have canned goods’ shelves, a chest freezer, drawers with dried food packets, an extra fridge. What happens if the power goes out and my generator unit isn’t installed yet? What happens if the garage burns down? Will we all starve? Does that mean I have to kill my younger two children? Is a little deprivation in the short term going to mean they have to give up their lives in the long term? What it the expenses get so bad they have to go to public school, or be home educated? See, it’s a non-issue.
I am the eldest of 7. My youngest brother was born when I was 19. At 51, while there are certainly days I would tell you that I can name candidates out of my sibling group to be eliminated, the world would really NOT be better without each of them. The techs (coder, hardware and network), the carpenter, the executive assistant, even the MSW, all contribute to Society.
And that youngest makes a very good living as a musician and music teacher.
Our sibling group did not go to Catholic school all the time. I went to a magnet high school. One year, we couldn’t afford anything, and we all went to public school. Two of my brothers went to alternative high schools. Further, in most Catholic schools, there is a break in tuition after the first or second child. And I used all three sources for my children, including home education, something you neglected (Perhaps you don’t know much about it).
I see you don’t list yourself in your profile as having the experience of children to raise, and I see you don’t list yourself as belonging to any ecclesial community. Perhaps we can pray for you, that you can understand how your argument has holes.