http://www.bbc.co.uk/news/world-europe-19699581
Actually, I would not even disagree. If you don't pay services, then you cannot expct them to be given to you.
What is revealing and tells its own story, is the fact that Germany still allows the churches and Jews to raise obligatory taxes - and state offices even assisting in that. That is a bit too much of medieval order for my taste.
Anyhow, nobody is forced to stay. And that this way they will stem the tide of people leaving them, remains in doubt.
If you want to give money for social causes and doing something good, donor privately to aid organisations of research foundations of your choice (and careful examination!). Don't throw it after mandatory payment duties of religious institutions as if you still were a medieval peasant serving his tenth.