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Membership figures are much easier to obtain than distinguishing between who's actually "practicing" and who isn't.

Christianity is by a considerable margin the religion with the largest number of (at least nominal) adherents at about 2.4 billion. Islam would be second with around 1.6 billion. Hinduism has about a billion. It drops off pretty sharply after that.

I've seen the argument made that a lot of people are Christian "by default" since it's easier to say you're Christian than to explain what you actually believe (or that you're atheist), so there may be more "practicing" Muslims than Christians. I can't prove it's not true.

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12y ago

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