You should do some basic research yourself. Childcare is too expensive for almost everyone. Is your idea that only the relatively wealthy should have children? You're not worried about the consequences of a .03 fertility rate?
https://www.americanprogress.org/article/child-care-expenses...
I think the solution is to make childcare affordable with government intervention. But that's not going to happen if people keep having kids. There needs to be an actual demographic crisis