I was very careful to separate the financial difference and the cultural difference, and I feel like you're ignoring that.
Having kids at all is not a basic human need on the level of food, water, and shelter. It is a biological urge, similar to the urge for french fries.
Now, I don't personally think that eating a reasonable serving of french fries while getting adequate exercise is blameworthy; nor do I think that buying a Lambourghini while earning $10M/year is blameworthy; nor do I think that having children you can afford and care for is blameworthy.
I do think that it's silly for popular culture to have sympathy and often admiration for unprepared parents, but scorn and derision for indebted luxury car owners.
FWIW, I am childless and drive a VW.