That's what they fear most about Muslims, that they're part of a religious religion as opposed to a club that certain people claim they go to on Sundays. Islam, like other religions in other parts of the world, is an integral part of their culture, part of their daily lives.
Christians are religious in name only, compartmentalizing it, reducing it to a mere activity superficially participated in on Sundays and select holidays. Even those holidays have been reduced to more than an excuse for crass commercialization and gluttony.
And when you see Christian sects where it appears to be a more pronounced aspect of their lives, like the Amish, it's just a costume, there's nothing religious in their behavior other than a beard and a hat or his pet wife in a bonnet dutifully keeping silent. But at least it isn't a burka, so it ain't that bad.
Once in a while I would see a Buddhist monk or two on the D Train going Downtown (Fordham Road has the biggest population of Cambodians outside of Cambodia), and I would feel more spirituality from them sitting in the same car that I did being smack dab in the middle of Amish country in Lancaster.
The Sign of Peace and the Eucharist were the only part of Mass where I felt any spirituality. The rest is just a drone where everybody is trying hard not to fall asleep. Then we go back to our secular lives.
