To force someone to remain in a faith they do not believe seems rather absurd as it negates the whole basis of sincere belief and seems closer to officially endorsing hypocrisy.Look at countries which are majority Christian, if only nominally. In the U.S. , where competition is open Christianity thrives. In most European countries with some form of state sponsorship of a state church the church is dead from the inside out.
There is a famous remark attributed to the 19th century Egyptian Muslim activist and scholar Muhammad Abduh who visited various European countries and said 'I have been to many Muslim countries and found many Muslims there, but little Islam. I have also been to some European countries and found few Muslims there, but a lot of Islam'.
Paradoxically, the churches that grow fastest have the strictest rules of inclusion. I would guess that most Muslims in Europe set high standards for individuals. In countries where you are mandated to be a member you go through the motions.
These membership growth and retention ideas can be found developed throughout The New Virginia Church Man.
Thanks to Instapundit for link to the post quoted above.
(Cross posted at The Emirates Economist.)