Here's the thing, conditions always change. It is entirely possible to start a family while working in a great job. It's also possible, and increasingly likely, to lose that job to automation or offshoring, and then be unable to find a job that pays as well, or any job at all, for an extended period of time.

So the question becomes, should entire families suffer poverty as punishment for the automation or outsourcing of their labor?

As for the idea of overpopulation itself, I recommend watching this great Kurzgesagt video on it.