Hey, let’s leave Luther out of this, please. you can probably blame the secularism plaguing modern Europe, and liberalism infesting the churches.
See this post: http://www.freerepublic.com/focus/religion/3556645/posts?page=13#13
The Evangelical Church in Germany is like mainline Protestant here.
What’s more, all the building of grand churches in Europe through the centuries, certainly led by the Catholic Church, is something that turns many people away from Christianity there (and here, too, even). The buildings take on supreme importance, and they are needy masters requiring expensive upkeep. People know, though, that investing so much in buildings isn’t at all what Biblical Christianity is about. The Christian churches that invested so much in buildings are pretty much all that’s been left in Europe for hundreds of years.