This is happening everywhere , including nations with great social systems/healthcare/parental leave/etc. And it happens even when nations try throwing money at the problem. While economic concerns may be worsening the issue - I don't think they're the root cause as many would like to say. I think the root cause is that we have outsmarted our biology. Once you give people education on the risks of sex and pregnancy,…
But now that I think of it, there might be solutions. The problem is, they're incompatible with individualism. Imagine passing a law that everyone is obliged to take care of a child. Sure, this would cause issues, but would instantly solve the population crisis. The problem is, such a law will never be passed in a democratic society, because everyone votes according to what they believe is their own best interest, not the best interest of the group. But an absolute regime could potentially do this.
Now that I think of it, maybe the problem is that human societies grew too big too fast and our brains didn't adapt. We're capable of self-sacrifice, just in a group of max 20, not 20 million. We need a completely new paradigm of organizing the society.