It's called hedonistic adaptation. Most people scale material consumption with income, and the new consumption level quickly feels normal. If this happens to you, then it's plausible that children will always look expensive, no matter your earned income.
The quality of life that modern, affluent people consider unacceptably low for a family would be considered decadent by most people who ever lived anywhere.
The quality of life that modern, affluent people consider unacceptably low for a family would be considered decadent by most people who ever lived anywhere.