At no point did I or I think anyone in this thread say it would be a choice to kick existing Muslim citizens out of a country, as that is wrong. The countries that gave them citizenship cannot and should not go back on that.
My question was why accept more Muslims.
I am not a french citizen. I am a turkish citizen, I work in france and plan to apply for citizenship.
It is besides the point too. There will be more people like me in the future. Who are highly qualified, some of them atheists or agnostics. And your idea of not letting new muslims into europe, will block these people also.