In general, people are so engaged, so invested, deep in their distraction bubbles (jobs, social interactions, accumulation of goods, etc.), that they don’t even have time to think about it, to question the point of doing all of this, and just keep reproducing, like it’s a must, like it’s an obvious thing to do. They just follow the ’life script’, no questions asked.
What’s frustrating is that those people are profoundly and irrevocably convinced they have the absolute right to create another sentient being, and bring them into the world. They’re creating a need, a set of needs (emotional, physiological, etc.), which then need, or at least are pursued, to be fulfilled.
They’re creating a problem that begs for a solution.