If you put Germans whose lives function in a US-style, even just getting to work will be a huge drag.
Misery depends on the structure of society. Here in Sweden I can walk to work. This means that I'm spending zero money on travel to work, and that my travel to work contributes $0 to Swedish GDP. But this is actually better than if Swedish GDP were higher and I was traveling by car.
This is one way in which GDP can be extremely misleading.