I'm not religious either, but a better analogy for a believer would be telling someone to pray or sacrifice a goat to stave off scurvy. If you really believed

I'm not religious either, but a better analogy for a believer would be telling someone to pray or sacrifice a goat to stave off scurvy. If you really believed some nonsense, sure you'd want to not keep it to yourself, and to tell others how to live. But that wouldn't actually be a good thing, despite the believer believing it was.