From a german who has a child and is thinking about a second one: Its less about the money but more about child care. In general wages in germany are OK. Yes it is extremly hard to get rich through labor but if you have a full time job the wage is OK (underpayed maybe but no comparison to having multiple jobs in the US). The problem is, it is often impossible to find child care. It is more or less for free and thus there are few private kindergardens.

German here who has dealt with the German immigration nightmare in the past. The government talks big that Germany needs skilled immigrants. They make laws to make it easier to get a visa but don’t think it much further. The immigration offices are overloaded beyond belief. It takes > 6 month to get an appointment. In addition, Germany has a fetish for degrees. You have worked for > 10 years as a plumber in your country? You don’t have a German plumber degree? Well too bad you are not allowed to run a business.