Of course, "If you want to have children, you can find a way to afford them." is a very nuanced statement for you to have made.

4 kids on a lower-middle-class income in the US makes me picture poverty, as someone on a lower-middle-class income whose girlfriend is legally in poverty (and with that being the primary reason we haven't gotten married and had kids yet). If you disagree, feel free to describe your circumstances in more nuanced detail. I wonder if it will really end up being a description of lower-middle-class.